25604920 has 32 divisors (see below), whose sum is σ = 62849520. Its totient is φ = 9310720.

The previous prime is 25604899. The next prime is 25604939. The reversal of 25604920 is 2940652.

It is a super-2 number, since 2×25604920² = 1311223856412800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28657 + ... + 29536.

Almost surely, 2^25604920 is an apocalyptic number.

25604920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25604920 is an abundant number, since it is smaller than the sum of its proper divisors (37244600).

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

25604920 is a wasteful number, since it uses less digits than its factorization.

25604920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58215 (or 58211 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 25604920 is about 5060.1304331015. The cubic root of 25604920 is about 294.7413993432.

The spelling of 25604920 in words is "twenty-five million, six hundred four thousand, nine hundred twenty".