252805052525 has 6 divisors (see below), whose sum is σ = 313478265162. Its totient is φ = 202244042000.

The previous prime is 252805052509. The next prime is 252805052527. The reversal of 252805052525 is 525250508252.

It can be written as a sum of positive squares in 3 ways, for example, as 31993403689 + 220811648836 = 178867^2 + 469906^2 .

It is not a de Polignac number, because 252805052525 - 2⁴ = 252805052509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252805052527) 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 5 ways as a sum of consecutive naturals, for example, 5056101026 + ... + 5056101075.

It is an arithmetic number, because the mean of its divisors is an integer number (52246377527).

Almost surely, 2^252805052525 is an apocalyptic number.

252805052525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

252805052525 is a deficient number, since it is larger than the sum of its proper divisors (60673212637).

252805052525 is a wasteful number, since it uses less digits than its factorization.

252805052525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10112202111 (or 10112202106 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 41.

The spelling of 252805052525 in words is "two hundred fifty-two billion, eight hundred five million, fifty-two thousand, five hundred twenty-five".