252662391522 has 54 divisors (see below), whose sum is σ = 550768287459. Its totient is φ = 83711109120.

The previous prime is 252662391469. The next prime is 252662391529. The reversal of 252662391522 is 225193266252.

252662391522 is a `hidden beast` number, since 2 + 5 + 2 + 6 + 623 + 9 + 15 + 2 + 2 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 229384481481 + 23277910041 = 478941^2 + 152571^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=355431.

It is not an unprimeable number, because it can be changed into a prime (252662391529) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 548074372 + ... + 548074832.

Almost surely, 2^252662391522 is an apocalyptic number.

252662391522 is an abundant number, since it is smaller than the sum of its proper divisors (298105895937).

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

252662391522 is an frugal number, since it uses more digits than its factorization.

252662391522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444 (or 723 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The spelling of 252662391522 in words is "two hundred fifty-two billion, six hundred sixty-two million, three hundred ninety-one thousand, five hundred twenty-two".