25710864 has 40 divisors (see below), whose sum is σ = 66781440. Its totient is φ = 8523648.

The previous prime is 25710859. The next prime is 25710871. The reversal of 25710864 is 46801752.

It is a super-2 number, since 2×25710864² = 1322097055252992, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8097 + ... + 10815.

It is an arithmetic number, because the mean of its divisors is an integer number (1669536).

Almost surely, 2^25710864 is an apocalyptic number.

25710864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25710864 is an abundant number, since it is smaller than the sum of its proper divisors (41070576).

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

25710864 is a wasteful number, since it uses less digits than its factorization.

25710864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927 (or 2921 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 25710864 is about 5070.5881315682. The cubic root of 25710864 is about 295.1473514556.

The spelling of 25710864 in words is "twenty-five million, seven hundred ten thousand, eight hundred sixty-four".