25897951308 has 12 divisors (see below), whose sum is σ = 60428553080. Its totient is φ = 8632650432.

The previous prime is 25897951279. The next prime is 25897951369. The reversal of 25897951308 is 80315979852.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1079081293 + ... + 1079081316.

Almost surely, 2^25897951308 is an apocalyptic number.

It is an amenable number.

25897951308 is an abundant number, since it is smaller than the sum of its proper divisors (34530601772).

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

25897951308 is a wasteful number, since it uses less digits than its factorization.

25897951308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158162616 (or 2158162614 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 57.

The spelling of 25897951308 in words is "twenty-five billion, eight hundred ninety-seven million, nine hundred fifty-one thousand, three hundred eight".