82530757825 has 12 divisors (see below), whose sum is σ = 102341824828. Its totient is φ = 66022228800.

The previous prime is 82530757819. The next prime is 82530757853. The reversal of 82530757825 is 52875703528.

It can be written as a sum of positive squares in 6 ways, for example, as 11199565584 + 71331192241 = 105828^2 + 267079^2 .

It is not a de Polignac number, because 82530757825 - 2¹⁷ = 82530626753 is a prime.

It is a super-2 number, since 2×82530757825² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1068199 + ... + 1142851.

Almost surely, 2^82530757825 is an apocalyptic number.

It is an amenable number.

82530757825 is a deficient number, since it is larger than the sum of its proper divisors (19811067003).

82530757825 is a wasteful number, since it uses less digits than its factorization.

82530757825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118884 (or 118879 counting only the distinct ones).

The product of its (nonzero) digits is 4704000, while the sum is 52.

The spelling of 82530757825 in words is "eighty-two billion, five hundred thirty million, seven hundred fifty-seven thousand, eight hundred twenty-five".