25604925 has 24 divisors (see below), whose sum is σ = 43482336. Its totient is φ = 13285440.

The previous prime is 25604899. The next prime is 25604939. The reversal of 25604925 is 52940652.

It is not a de Polignac number, because 25604925 - 2⁷ = 25604797 is a prime.

It is a super-2 number, since 2×25604925² = 1311224368511250, 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 23 ways as a sum of consecutive naturals, for example, 1839 + ... + 7388.

It is an arithmetic number, because the mean of its divisors is an integer number (1811764).

Almost surely, 2^25604925 is an apocalyptic number.

25604925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25604925 is a deficient number, since it is larger than the sum of its proper divisors (17877411).

25604925 is a wasteful number, since it uses less digits than its factorization.

25604925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9277 (or 9272 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 25604925 is about 5060.1309271599. The cubic root of 25604925 is about 294.7414185285.

The spelling of 25604925 in words is "twenty-five million, six hundred four thousand, nine hundred twenty-five".