8457256572 has 24 divisors (see below), whose sum is σ = 19774809600. Its totient is φ = 2813198256.

The previous prime is 8457256397. The next prime is 8457256589. The reversal of 8457256572 is 2756527548.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729922 + ... + 741417.

It is an arithmetic number, because the mean of its divisors is an integer number (823950400).

Almost surely, 2^8457256572 is an apocalyptic number.

It is an amenable number.

8457256572 is an abundant number, since it is smaller than the sum of its proper divisors (11317553028).

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

8457256572 is a wasteful number, since it uses less digits than its factorization.

8457256572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471825 (or 1471823 counting only the distinct ones).

The product of its digits is 4704000, while the sum is 51.

The square root of 8457256572 is about 91963.3436321233. The cubic root of 8457256572 is about 2037.4009394021.

The spelling of 8457256572 in words is "eight billion, four hundred fifty-seven million, two hundred fifty-six thousand, five hundred seventy-two".