52512621525 has 72 divisors (see below), whose sum is σ = 115761201920. Its totient is φ = 22159163520.

The previous prime is 52512621463. The next prime is 52512621533.

52512621525 is a `hidden beast` number, since 5 + 2 + 5 + 1 + 2 + 621 + 5 + 25 = 666.

52512621525 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 52512621525 - 2⁸ = 52512621269 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 52512621525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1261885 + ... + 1302834.

Almost surely, 2^52512621525 is an apocalyptic number.

It is an amenable number.

52512621525 is an abundant number, since it is smaller than the sum of its proper divisors (63248580395).

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

52512621525 is a wasteful number, since it uses less digits than its factorization.

52512621525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564755 (or 2564747 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The spelling of 52512621525 in words is "fifty-two billion, five hundred twelve million, six hundred twenty-one thousand, five hundred twenty-five".