252638222792 has 108 divisors (see below), whose sum is σ = 513383347755. Its totient is φ = 116535985632.

The previous prime is 252638222791. The next prime is 252638222797. The reversal of 252638222792 is 297222836252.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

252638222792 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 126319111396 + 126319111396 = 355414^2 + 355414^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=355414.

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 252638222792.

It is not an unprimeable number, because it can be changed into a prime (252638222791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1269538709 + ... + 1269538907.

Almost surely, 2^252638222792 is an apocalyptic number.

It is an amenable number.

252638222792 is an abundant number, since it is smaller than the sum of its proper divisors (260745124963).

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

252638222792 is an equidigital number, since it uses as much as digits as its factorization.

252638222792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 267 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 50.

Multiplying 252638222792 by its sum of digits (50), we get a square (12631911139600 = 3554140²).

The spelling of 252638222792 in words is "two hundred fifty-two billion, six hundred thirty-eight million, two hundred twenty-two thousand, seven hundred ninety-two".