25770864 has 60 divisors (see below), whose sum is σ = 77451144. Its totient is φ = 7362432.

The previous prime is 25770851. The next prime is 25770883. The reversal of 25770864 is 46807752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3127 + ... + 7830.

Almost surely, 2^25770864 is an apocalyptic number.

25770864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25770864 is an abundant number, since it is smaller than the sum of its proper divisors (51680280).

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

25770864 is a wasteful number, since it uses less digits than its factorization.

25770864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10982 (or 10969 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 25770864 is about 5076.5011572933. The cubic root of 25770864 is about 295.3767626952.

The spelling of 25770864 in words is "twenty-five million, seven hundred seventy thousand, eight hundred sixty-four".