25997568 has 36 divisors (see below), whose sum is σ = 69193488. Its totient is φ = 8665600.

The previous prime is 25997551. The next prime is 25997579. The reversal of 25997568 is 86579952.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25997568.

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, 16158 + ... + 17693.

Almost surely, 2^25997568 is an apocalyptic number.

It is an amenable number.

25997568 is an abundant number, since it is smaller than the sum of its proper divisors (43195920).

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

25997568 is an equidigital number, since it uses as much as digits as its factorization.

25997568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33870 (or 33856 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 51.

The square root of 25997568 is about 5098.7810307955. The cubic root of 25997568 is about 296.2403696419.

It can be divided in two parts, 25997 and 568, that added together give a triangular number (26565 = T₂₃₀).

The spelling of 25997568 in words is "twenty-five million, nine hundred ninety-seven thousand, five hundred sixty-eight".