252579950569 has 4 divisors (see below), whose sum is σ = 252754025040. Its totient is φ = 252405876100.

The previous prime is 252579950521. The next prime is 252579950591. The reversal of 252579950569 is 965059975252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252579950569 - 2²⁷ = 252445732841 is a prime.

It is a super-2 number, since 2×252579950569² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252579950569.

It is not an unprimeable number, because it can be changed into a prime (252579950269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87035059 + ... + 87037960.

It is an arithmetic number, because the mean of its divisors is an integer number (63188506260).

Almost surely, 2^252579950569 is an apocalyptic number.

It is an amenable number.

252579950569 is a deficient number, since it is larger than the sum of its proper divisors (174074471).

252579950569 is a wasteful number, since it uses less digits than its factorization.

252579950569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174074470.

The product of its (nonzero) digits is 76545000, while the sum is 64.

The spelling of 252579950569 in words is "two hundred fifty-two billion, five hundred seventy-nine million, nine hundred fifty thousand, five hundred sixty-nine".