252508117857 has 8 divisors (see below), whose sum is σ = 336750115776. Its totient is φ = 168302432592.

The previous prime is 252508117733. The next prime is 252508117859. The reversal of 252508117857 is 758711805252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 252508117857 - 2¹⁴ = 252508101473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252508117859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9061933 + ... + 9089754.

It is an arithmetic number, because the mean of its divisors is an integer number (42093764472).

Almost surely, 2^252508117857 is an apocalyptic number.

It is an amenable number.

252508117857 is a deficient number, since it is larger than the sum of its proper divisors (84241997919).

252508117857 is a wasteful number, since it uses less digits than its factorization.

252508117857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18156327.

The product of its (nonzero) digits is 1568000, while the sum is 51.

The spelling of 252508117857 in words is "two hundred fifty-two billion, five hundred eight million, one hundred seventeen thousand, eight hundred fifty-seven".