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25328052 = 223478173
BaseRepresentation
bin110000010011…
…1100110110100
31202122210120000
41200213212310
522440444202
62302511300
7425166501
oct140474664
952583500
1025328052
111332a382
128595530
13532a619
1435144a8
15235491c
hex18279b4

25328052 has 30 divisors (see below), whose sum is σ = 66213378. Its totient is φ = 8442576.

The previous prime is 25328041. The next prime is 25328053. The reversal of 25328052 is 25082352.

25328052 is a `hidden beast` number, since 2 + 532 + 80 + 52 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24860196 + 467856 = 4986^2 + 684^2 .

It is a super-2 number, since 2×253280522 = 1283020436229408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25328053) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 38763 + ... + 39410.

Almost surely, 225328052 is an apocalyptic number.

It is an amenable number.

25328052 is an abundant number, since it is smaller than the sum of its proper divisors (40885326).

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

25328052 is a wasteful number, since it uses less digits than its factorization.

25328052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78189 (or 78178 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 25328052 is about 5032.6982822339. The cubic root of 25328052 is about 293.6751931437.

The spelling of 25328052 in words is "twenty-five million, three hundred twenty-eight thousand, fifty-two".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 324 78173 156346 234519 312692 469038 703557 938076 1407114 2110671 2814228 4221342 6332013 8442684 12664026 25328052