25251525264 has 80 divisors (see below), whose sum is σ = 74570191488. Its totient is φ = 7212973056.

The previous prime is 25251525151. The next prime is 25251525287. The reversal of 25251525264 is 46252515252.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2116564 + ... + 2128460.

Almost surely, 2^25251525264 is an apocalyptic number.

25251525264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25251525264 is an abundant number, since it is smaller than the sum of its proper divisors (49318666224).

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

25251525264 is a wasteful number, since it uses less digits than its factorization.

25251525264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18232 (or 18226 counting only the distinct ones).

The product of its digits is 240000, while the sum is 39.

The spelling of 25251525264 in words is "twenty-five billion, two hundred fifty-one million, five hundred twenty-five thousand, two hundred sixty-four".