917125085 has 4 divisors (see below), whose sum is σ = 1100550108. Its totient is φ = 733700064.

The previous prime is 917125051. The next prime is 917125093. The reversal of 917125085 is 580521719.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580521719 = 839 ⋅691921.

It can be written as a sum of positive squares in 2 ways, for example, as 171452836 + 745672249 = 13094^2 + 27307^2 .

It is a cyclic number.

It is not a de Polignac number, because 917125085 - 2⁸ = 917124829 is a prime.

It is a super-2 number, since 2×917125085² = 1682236843072514450, which contains 22 as substring.

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91712504 + ... + 91712513.

It is an arithmetic number, because the mean of its divisors is an integer number (275137527).

Almost surely, 2^917125085 is an apocalyptic number.

It is an amenable number.

917125085 is a deficient number, since it is larger than the sum of its proper divisors (183425023).

917125085 is a wasteful number, since it uses less digits than its factorization.

917125085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183425022.

The product of its (nonzero) digits is 25200, while the sum is 38.

The square root of 917125085 is about 30284.0731243339. The cubic root of 917125085 is about 971.5746857113.

The spelling of 917125085 in words is "nine hundred seventeen million, one hundred twenty-five thousand, eighty-five".