172125165 has 16 divisors (see below), whose sum is σ = 275688000. Its totient is φ = 91704192.

The previous prime is 172125143. The next prime is 172125193. The reversal of 172125165 is 561521271.

It is not a de Polignac number, because 172125165 - 2⁵ = 172125133 is a prime.

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, 10266 + ... + 21204.

It is an arithmetic number, because the mean of its divisors is an integer number (17230500).

Almost surely, 2^172125165 is an apocalyptic number.

172125165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172125165 is a deficient number, since it is larger than the sum of its proper divisors (103562835).

172125165 is a wasteful number, since it uses less digits than its factorization.

172125165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11996.

The product of its digits is 4200, while the sum is 30.

The square root of 172125165 is about 13119.6480516819. The cubic root of 172125165 is about 556.2646431360.

The spelling of 172125165 in words is "one hundred seventy-two million, one hundred twenty-five thousand, one hundred sixty-five".