25630656 has 28 divisors (see below), whose sum is σ = 67814952. Its totient is φ = 8543488.

The previous prime is 25630643. The next prime is 25630687. The reversal of 25630656 is 65603652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66555 + ... + 66938.

Almost surely, 2^25630656 is an apocalyptic number.

It is an amenable number.

25630656 is an abundant number, since it is smaller than the sum of its proper divisors (42184296).

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

25630656 is a wasteful number, since it uses less digits than its factorization.

25630656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133508 (or 133498 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 25630656 is about 5062.6728118653. The cubic root of 25630656 is about 294.8401163690.

The spelling of 25630656 in words is "twenty-five million, six hundred thirty thousand, six hundred fifty-six".