72525252528 has 50 divisors (see below), whose sum is σ = 209909125844. Its totient is φ = 24175083744.

The previous prime is 72525252517. The next prime is 72525252581. The reversal of 72525252528 is 82525252527.

72525252528 is a `hidden beast` number, since 7 + 2 + 52 + 52 + 525 + 28 = 666.

It is a hoax number, since the sum of its digits (45) 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 9 ways as a sum of consecutive naturals, for example, 27979126 + ... + 27981717.

Almost surely, 2^72525252528 is an apocalyptic number.

It is an amenable number.

72525252528 is an abundant number, since it is smaller than the sum of its proper divisors (137383873316).

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

72525252528 is a wasteful number, since it uses less digits than its factorization.

72525252528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55960863 (or 55960848 counting only the distinct ones).

The product of its digits is 1120000, while the sum is 45.

Subtracting 72525252528 from its reverse (82525252527), we obtain a palindrome (9999999999).

The spelling of 72525252528 in words is "seventy-two billion, five hundred twenty-five million, two hundred fifty-two thousand, five hundred twenty-eight".