252505017306556 has 24 divisors (see below), whose sum is σ = 505363435697120. Its totient is φ = 108140707184832.

The previous prime is 252505017306547. The next prime is 252505017306587. The reversal of 252505017306556 is 655603710505252.

It is a super-2 number, since 2×252505017306556² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3155326095 + ... + 3155406118.

Almost surely, 2^{252505017306556} is an apocalyptic number.

It is an amenable number.

252505017306556 is an abundant number, since it is smaller than the sum of its proper divisors (252858418390564).

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

252505017306556 is a wasteful number, since it uses less digits than its factorization.

252505017306556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6310733653 (or 6310733651 counting only the distinct ones).

The product of its (nonzero) digits is 9450000, while the sum is 52.

The spelling of 252505017306556 in words is "two hundred fifty-two trillion, five hundred five billion, seventeen million, three hundred six thousand, five hundred fifty-six".