25897207960 has 32 divisors (see below), whose sum is σ = 62750928240. Its totient is φ = 9562045824.

The previous prime is 25897207937. The next prime is 25897207981. The reversal of 25897207960 is 6970279852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24900642 + ... + 24901681.

Almost surely, 2^25897207960 is an apocalyptic number.

25897207960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25897207960 is an abundant number, since it is smaller than the sum of its proper divisors (36853720280).

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

25897207960 is a wasteful number, since it uses less digits than its factorization.

25897207960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49802347 (or 49802343 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 25897207960 in words is "twenty-five billion, eight hundred ninety-seven million, two hundred seven thousand, nine hundred sixty".