252780105268 has 12 divisors (see below), whose sum is σ = 442371691300. Its totient is φ = 126388193472.

The previous prime is 252780105247. The next prime is 252780105301. The reversal of 252780105268 is 862501087252.

It can be written as a sum of positive squares in 2 ways, for example, as 137857749264 + 114922356004 = 371292^2 + 339002^2 .

It is a super-2 number, since 2×252780105268² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132471 + ... + 723262.

Almost surely, 2^252780105268 is an apocalyptic number.

It is an amenable number.

252780105268 is a deficient number, since it is larger than the sum of its proper divisors (189591586032).

252780105268 is a wasteful number, since it uses less digits than its factorization.

252780105268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929586 (or 929584 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 252780105268 in words is "two hundred fifty-two billion, seven hundred eighty million, one hundred five thousand, two hundred sixty-eight".