856325823 has 16 divisors (see below), whose sum is σ = 1183040640. Its totient is φ = 550613024.

The previous prime is 856325809. The next prime is 856325867. The reversal of 856325823 is 328523658.

It is a cyclic number.

It is not a de Polignac number, because 856325823 - 2²⁴ = 839548607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856325893) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 36261 + ... + 55022.

It is an arithmetic number, because the mean of its divisors is an integer number (73940040).

Almost surely, 2^856325823 is an apocalyptic number.

856325823 is a deficient number, since it is larger than the sum of its proper divisors (326714817).

856325823 is a wasteful number, since it uses less digits than its factorization.

856325823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91398.

The product of its digits is 345600, while the sum is 42.

The square root of 856325823 is about 29263.0453473318. The cubic root of 856325823 is about 949.6123341631.

The spelling of 856325823 in words is "eight hundred fifty-six million, three hundred twenty-five thousand, eight hundred twenty-three".