855865125 has 24 divisors (see below), whose sum is σ = 1542841560. Its totient is φ = 456460800.

The previous prime is 855865103. The next prime is 855865133. The reversal of 855865125 is 521568558.

855865125 is a `hidden beast` number, since 8 + 55 + 86 + 512 + 5 = 666.

855865125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2232036 + 853633089 = 1494^2 + 29217^2 .

It is not a de Polignac number, because 855865125 - 2²⁰ = 854816549 is a prime.

It is a super-2 number, since 2×855865125² = 1465010224382531250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 379260 + ... + 381509.

It is an arithmetic number, because the mean of its divisors is an integer number (64285065).

Almost surely, 2^855865125 is an apocalyptic number.

It is an amenable number.

855865125 is a deficient number, since it is larger than the sum of its proper divisors (686976435).

855865125 is a wasteful number, since it uses less digits than its factorization.

855865125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760790 (or 760777 counting only the distinct ones).

The product of its digits is 480000, while the sum is 45.

The square root of 855865125 is about 29255.1726195557. The cubic root of 855865125 is about 949.4420084259.

The spelling of 855865125 in words is "eight hundred fifty-five million, eight hundred sixty-five thousand, one hundred twenty-five".