811572270325 has 6 divisors (see below), whose sum is σ = 1006349615234. Its totient is φ = 649257816240.

The previous prime is 811572270319. The next prime is 811572270337. The reversal of 811572270325 is 523072275118.

It can be written as a sum of positive squares in 3 ways, for example, as 3331713841 + 808240556484 = 57721^2 + 899022^2 .

It is not a de Polignac number, because 811572270325 - 2²⁵ = 811538715893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16231445382 + ... + 16231445431.

Almost surely, 2^811572270325 is an apocalyptic number.

It is an amenable number.

811572270325 is a deficient number, since it is larger than the sum of its proper divisors (194777344909).

811572270325 is a wasteful number, since it uses less digits than its factorization.

811572270325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32462890823 (or 32462890818 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 43.

The spelling of 811572270325 in words is "eight hundred eleven billion, five hundred seventy-two million, two hundred seventy thousand, three hundred twenty-five".