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25486972 = 22747107181
BaseRepresentation
bin110000100111…
…0011001111100
31202221212112221
41201032121330
523011040342
62310135124
7426431020
oct141163174
952855487
1025486972
1113428815
1286514a4
135384a64
143556380
152386a67
hex184e67c

25486972 has 48 divisors (see below), whose sum is σ = 52835328. Its totient is φ = 10532160.

The previous prime is 25486957. The next prime is 25486987. The reversal of 25486972 is 27968452.

It is an interprime number because it is at equal distance from previous prime (25486957) and next prime (25486987).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140722 + ... + 140902.

It is an arithmetic number, because the mean of its divisors is an integer number (1100736).

Almost surely, 225486972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25486972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26417664).

25486972 is an abundant number, since it is smaller than the sum of its proper divisors (27348356).

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

25486972 is a wasteful number, since it uses less digits than its factorization.

25486972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346 (or 344 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 25486972 is about 5048.4623401586. The cubic root of 25486972 is about 294.2881313062.

The spelling of 25486972 in words is "twenty-five million, four hundred eighty-six thousand, nine hundred seventy-two".

Divisors: 1 2 4 7 14 28 47 94 107 181 188 214 329 362 428 658 724 749 1267 1316 1498 2534 2996 5029 5068 8507 10058 17014 19367 20116 34028 35203 38734 59549 70406 77468 119098 135569 140812 238196 271138 542276 910249 1820498 3640996 6371743 12743486 25486972