25725864 has 16 divisors (see below), whose sum is σ = 64314720. Its totient is φ = 8575280.

The previous prime is 25725859. The next prime is 25725881. The reversal of 25725864 is 46852752.

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, 535932 + ... + 535979.

It is an arithmetic number, because the mean of its divisors is an integer number (4019670).

Almost surely, 2^25725864 is an apocalyptic number.

25725864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25725864 is an abundant number, since it is smaller than the sum of its proper divisors (38588856).

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

25725864 is a wasteful number, since it uses less digits than its factorization.

25725864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071920 (or 1071916 counting only the distinct ones).

The product of its digits is 134400, while the sum is 39.

The square root of 25725864 is about 5072.0670342573. The cubic root of 25725864 is about 295.2047376976.

The spelling of 25725864 in words is "twenty-five million, seven hundred twenty-five thousand, eight hundred sixty-four".