82457557825 has 12 divisors (see below), whose sum is σ = 102326611888. Its totient is φ = 65914923600.

The previous prime is 82457557799. The next prime is 82457557837. The reversal of 82457557825 is 52875575428.

It is not a de Polignac number, because 82457557825 - 2⁷ = 82457557697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82457557825.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1245147 + ... + 1309696.

Almost surely, 2^82457557825 is an apocalyptic number.

It is an amenable number.

82457557825 is a deficient number, since it is larger than the sum of its proper divisors (19869054063).

82457557825 is a wasteful number, since it uses less digits than its factorization.

82457557825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2556144 (or 2556139 counting only the distinct ones).

The product of its digits is 31360000, while the sum is 58.

The spelling of 82457557825 in words is "eighty-two billion, four hundred fifty-seven million, five hundred fifty-seven thousand, eight hundred twenty-five".