25712256 has 32 divisors (see below), whose sum is σ = 68299200. Its totient is φ = 8570624.

The previous prime is 25712251. The next prime is 25712311. The reversal of 25712256 is 65221752.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×25712256² = 1322240217219072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25712251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33096 + ... + 33863.

It is an arithmetic number, because the mean of its divisors is an integer number (2134350).

Almost surely, 2^25712256 is an apocalyptic number.

It is an amenable number.

25712256 is an abundant number, since it is smaller than the sum of its proper divisors (42586944).

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

25712256 is an equidigital number, since it uses as much as digits as its factorization.

25712256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66976 (or 66964 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 25712256 is about 5070.7253918941. The cubic root of 25712256 is about 295.1526778383.

The spelling of 25712256 in words is "twenty-five million, seven hundred twelve thousand, two hundred fifty-six".