856125 has 24 divisors (see below), whose sum is σ = 1545336. Its totient is φ = 456000.

The previous prime is 856117. The next prime is 856133. The reversal of 856125 is 521658.

It is an interprime number because it is at equal distance from previous prime (856117) and next prime (856133).

It can be written as a sum of positive squares in 4 ways, for example, as 257049 + 599076 = 507^2 + 774^2 .

It is not a de Polignac number, because 856125 - 2³ = 856117 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 745 + ... + 1505.

It is an arithmetic number, because the mean of its divisors is an integer number (64389).

2⁸⁵⁶¹²⁵ is an apocalyptic number.

It is an amenable number.

856125 is a deficient number, since it is larger than the sum of its proper divisors (689211).

856125 is a wasteful number, since it uses less digits than its factorization.

856125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782 (or 769 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 856125 is about 925.2702307975. The cubic root of 856125 is about 94.9538094934.

The spelling of 856125 in words is "eight hundred fifty-six thousand, one hundred twenty-five".