856883725 has 12 divisors (see below), whose sum is σ = 1125038484. Its totient is φ = 645182720.

The previous prime is 856883669. The next prime is 856883737. The reversal of 856883725 is 527388658.

It can be written as a sum of positive squares in 6 ways, for example, as 35545444 + 821338281 = 5962^2 + 28659^2 .

It is a de Polignac number, because none of the positive numbers 2^k-856883725 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1007674 + ... + 1008523.

It is an arithmetic number, because the mean of its divisors is an integer number (93753207).

Almost surely, 2^856883725 is an apocalyptic number.

856883725 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

856883725 is a deficient number, since it is larger than the sum of its proper divisors (268154759).

856883725 is a wasteful number, since it uses less digits than its factorization.

856883725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016224 (or 2016219 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 52.

The square root of 856883725 is about 29272.5763300739. The cubic root of 856883725 is about 949.8185156553.

The spelling of 856883725 in words is "eight hundred fifty-six million, eight hundred eighty-three thousand, seven hundred twenty-five".