252780252557 has 32 divisors (see below), whose sum is σ = 316580140800. Its totient is φ = 196800242688.

The previous prime is 252780252553. The next prime is 252780252563. The reversal of 252780252557 is 755252087252.

It is not a de Polignac number, because 252780252557 - 2² = 252780252553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252780252553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7952498 + ... + 7984220.

It is an arithmetic number, because the mean of its divisors is an integer number (9893129400).

Almost surely, 2^252780252557 is an apocalyptic number.

It is an amenable number.

252780252557 is a deficient number, since it is larger than the sum of its proper divisors (63799888243).

252780252557 is a wasteful number, since it uses less digits than its factorization.

252780252557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34085.

The product of its (nonzero) digits is 3920000, while the sum is 50.

The spelling of 252780252557 in words is "two hundred fifty-two billion, seven hundred eighty million, two hundred fifty-two thousand, five hundred fifty-seven".