25764864 has 44 divisors (see below), whose sum is σ = 68680944. Its totient is φ = 8587264.

The previous prime is 25764841. The next prime is 25764881. The reversal of 25764864 is 46846752.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1122 + ... + 7265.

Almost surely, 2^25764864 is an apocalyptic number.

25764864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25764864 is an abundant number, since it is smaller than the sum of its proper divisors (42916080).

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

25764864 is an equidigital number, since it uses as much as digits as its factorization.

25764864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8410 (or 8392 counting only the distinct ones).

The product of its digits is 322560, while the sum is 42.

The square root of 25764864 is about 5075.9101646897. The cubic root of 25764864 is about 295.3538376052.

The spelling of 25764864 in words is "twenty-five million, seven hundred sixty-four thousand, eight hundred sixty-four".