855891125 has 16 divisors (see below), whose sum is σ = 1073605104. Its totient is φ = 681217600.

The previous prime is 855891097. The next prime is 855891131. The reversal of 855891125 is 521198558.

It can be written as a sum of positive squares in 8 ways, for example, as 142253329 + 713637796 = 11927^2 + 26714^2 .

It is not a de Polignac number, because 855891125 - 2²⁶ = 788782261 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 15 ways as a sum of consecutive naturals, for example, 7247 + ... + 42003.

It is an arithmetic number, because the mean of its divisors is an integer number (67100319).

Almost surely, 2^855891125 is an apocalyptic number.

It is an amenable number.

855891125 is a deficient number, since it is larger than the sum of its proper divisors (217713979).

855891125 is a wasteful number, since it uses less digits than its factorization.

855891125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34969 (or 34959 counting only the distinct ones).

The product of its digits is 144000, while the sum is 44.

The square root of 855891125 is about 29255.6169820430. The cubic root of 855891125 is about 949.4516225740.

The spelling of 855891125 in words is "eight hundred fifty-five million, eight hundred ninety-one thousand, one hundred twenty-five".