252638875264 has 16 divisors (see below), whose sum is σ = 503304009570. Its totient is φ = 126319437568.

The previous prime is 252638875213. The next prime is 252638875273. The reversal of 252638875264 is 462578836252.

It can be written as a sum of positive squares in only one way, i.e., 201385537600 + 51253337664 = 448760^2 + 226392^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 252638875199 and 252638875208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986870479 + ... + 986870734.

Almost surely, 2^252638875264 is an apocalyptic number.

It is an amenable number.

252638875264 is a deficient number, since it is larger than the sum of its proper divisors (250665134306).

252638875264 is an equidigital number, since it uses as much as digits as its factorization.

252638875264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973741227 (or 1973741215 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 58.

The spelling of 252638875264 in words is "two hundred fifty-two billion, six hundred thirty-eight million, eight hundred seventy-five thousand, two hundred sixty-four".