[go: up one dir, main page]

Search a number
-
+
25313120 = 255797233
BaseRepresentation
bin110000010001…
…1111101100000
31202122001001222
41200203331200
522440004440
62302314212
7425105120
oct140437540
952561058
1025313120
111331a138
128588968
1353238a1
14350cc80
1523502b5
hex1823f60

25313120 has 96 divisors (see below), whose sum is σ = 69346368. Its totient is φ = 8552448.

The previous prime is 25313107. The next prime is 25313129. The reversal of 25313120 is 2131352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25313129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108524 + ... + 108756.

It is an arithmetic number, because the mean of its divisors is an integer number (722358).

Almost surely, 225313120 is an apocalyptic number.

25313120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25313120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34673184).

25313120 is an abundant number, since it is smaller than the sum of its proper divisors (44033248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25313120 is a wasteful number, since it uses less digits than its factorization.

25313120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 25313120 is about 5031.2145650926. The cubic root of 25313120 is about 293.6174703204.

Adding to 25313120 its reverse (2131352), we get a palindrome (27444472).

The spelling of 25313120 in words is "twenty-five million, three hundred thirteen thousand, one hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 70 80 97 112 140 160 194 224 233 280 388 466 485 560 679 776 932 970 1120 1165 1358 1552 1631 1864 1940 2330 2716 3104 3262 3395 3728 3880 4660 5432 6524 6790 7456 7760 8155 9320 10864 13048 13580 15520 16310 18640 21728 22601 26096 27160 32620 37280 45202 52192 54320 65240 90404 108640 113005 130480 158207 180808 226010 260960 316414 361616 452020 632828 723232 791035 904040 1265656 1582070 1808080 2531312 3164140 3616160 5062624 6328280 12656560 25313120