25216137264 has 40 divisors (see below), whose sum is σ = 68973554160. Its totient is φ = 7910944768.

The previous prime is 25216137259. The next prime is 25216137277. The reversal of 25216137264 is 46273161252.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 15450249 + ... + 15451880.

It is an arithmetic number, because the mean of its divisors is an integer number (1724338854).

Almost surely, 2^25216137264 is an apocalyptic number.

25216137264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25216137264 is an abundant number, since it is smaller than the sum of its proper divisors (43757416896).

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

25216137264 is a wasteful number, since it uses less digits than its factorization.

25216137264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30902157 (or 30902151 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The spelling of 25216137264 in words is "twenty-five billion, two hundred sixteen million, one hundred thirty-seven thousand, two hundred sixty-four".