25291510264 has 16 divisors (see below), whose sum is σ = 48578206320. Its totient is φ = 12337321920.

The previous prime is 25291510259. The next prime is 25291510291. The reversal of 25291510264 is 46201519252.

It is a congruent number.

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, 38553804 + ... + 38554459.

It is an arithmetic number, because the mean of its divisors is an integer number (3036137895).

Almost surely, 2^25291510264 is an apocalyptic number.

It is an amenable number.

25291510264 is a deficient number, since it is larger than the sum of its proper divisors (23286696056).

25291510264 is a wasteful number, since it uses less digits than its factorization.

25291510264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77108310 (or 77108306 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 25291510264 in words is "twenty-five billion, two hundred ninety-one million, five hundred ten thousand, two hundred sixty-four".