25597152 has 72 divisors (see below), whose sum is σ = 83197296. Its totient is φ = 7312896.

The previous prime is 25597141. The next prime is 25597153. The reversal of 25597152 is 25179552.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×25597152² = 1310428381022208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25597153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4333 + ... + 8364.

It is an arithmetic number, because the mean of its divisors is an integer number (1155518).

Almost surely, 2^25597152 is an apocalyptic number.

It is an amenable number.

25597152 is an abundant number, since it is smaller than the sum of its proper divisors (57600144).

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

25597152 is a wasteful number, since it uses less digits than its factorization.

25597152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12720 (or 12709 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 25597152 is about 5059.3628057296. The cubic root of 25597152 is about 294.7115901925.

The spelling of 25597152 in words is "twenty-five million, five hundred ninety-seven thousand, one hundred fifty-two".