257572454456 has 48 divisors (see below), whose sum is σ = 497101260600. Its totient is φ = 125116827264.

The previous prime is 257572454453. The next prime is 257572454471. The reversal of 257572454456 is 654454275752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257572454453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7397135 + ... + 7431873.

Almost surely, 2^257572454456 is an apocalyptic number.

It is an amenable number.

257572454456 is a deficient number, since it is larger than the sum of its proper divisors (239528806144).

257572454456 is a wasteful number, since it uses less digits than its factorization.

257572454456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35496 (or 35455 counting only the distinct ones).

The product of its digits is 47040000, while the sum is 56.

The spelling of 257572454456 in words is "two hundred fifty-seven billion, five hundred seventy-two million, four hundred fifty-four thousand, four hundred fifty-six".