85570875625 has 15 divisors (see below), whose sum is σ = 106938505443. Its totient is φ = 68450850000.

The previous prime is 85570875617. The next prime is 85570875661. The reversal of 85570875625 is 52657807558.

The square root of 85570875625 is 292525.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 41405331289 + 44165544336 = 203483^2 + 210156^2 .

It is not a de Polignac number, because 85570875625 - 2³ = 85570875617 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 85570875625.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 7307275 + ... + 7318975.

Almost surely, 2^85570875625 is an apocalyptic number.

85570875625 is the 292525-th square number.

85570875625 is the 146263-rd centered octagonal number.

It is an amenable number.

85570875625 is a deficient number, since it is larger than the sum of its proper divisors (21367629818).

85570875625 is an frugal number, since it uses more digits than its factorization.

85570875625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23422 (or 11706 counting only the distinct ones).

The product of its (nonzero) digits is 23520000, while the sum is 58.

The spelling of 85570875625 in words is "eighty-five billion, five hundred seventy million, eight hundred seventy-five thousand, six hundred twenty-five".