25257951368 has 16 divisors (see below), whose sum is σ = 51001632780. Its totient is φ = 11657515968.

The previous prime is 25257951317. The next prime is 25257951373. The reversal of 25257951368 is 86315975252.

It can be written as a sum of positive squares in 2 ways, for example, as 25254930724 + 3020644 = 158918^2 + 1738^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

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, 121432355 + ... + 121432562.

Almost surely, 2^25257951368 is an apocalyptic number.

It is an amenable number.

25257951368 is an abundant number, since it is smaller than the sum of its proper divisors (25743681412).

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

25257951368 is a wasteful number, since it uses less digits than its factorization.

25257951368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242864936 (or 242864932 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 53.

The spelling of 25257951368 in words is "twenty-five billion, two hundred fifty-seven million, nine hundred fifty-one thousand, three hundred sixty-eight".