85515125 has 8 divisors (see below), whose sum is σ = 106723032. Its totient is φ = 68412000.

The previous prime is 85515119. The next prime is 85515167. The reversal of 85515125 is 52151558.

It can be written as a sum of positive squares in 4 ways, for example, as 24940036 + 60575089 = 4994^2 + 7783^2 .

It is not a de Polignac number, because 85515125 - 2⁴ = 85515109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85515091 and 85515100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341936 + ... + 342185.

It is an arithmetic number, because the mean of its divisors is an integer number (13340379).

Almost surely, 2^85515125 is an apocalyptic number.

It is an amenable number.

85515125 is a deficient number, since it is larger than the sum of its proper divisors (21207907).

85515125 is an equidigital number, since it uses as much as digits as its factorization.

85515125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684136 (or 684126 counting only the distinct ones).

The product of its digits is 10000, while the sum is 32.

The square root of 85515125 is about 9247.4388346179. The cubic root of 85515125 is about 440.5693816759.

The spelling of 85515125 in words is "eighty-five million, five hundred fifteen thousand, one hundred twenty-five".