16125165 has 72 divisors (see below), whose sum is σ = 33291648. Its totient is φ = 7197120.

The previous prime is 16125149. The next prime is 16125173. The reversal of 16125165 is 56152161.

It is a happy number.

It is not a de Polignac number, because 16125165 - 2⁴ = 16125149 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 156504 + ... + 156606.

It is an arithmetic number, because the mean of its divisors is an integer number (462384).

Almost surely, 2^16125165 is an apocalyptic number.

16125165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16125165 is an abundant number, since it is smaller than the sum of its proper divisors (17166483).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16125165 is a wasteful number, since it uses less digits than its factorization.

16125165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 189 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 16125165 is about 4015.6151459023. The cubic root of 16125165 is about 252.6395790709.

It can be divided in two parts, 16125 and 165, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 16125165 in words is "sixteen million, one hundred twenty-five thousand, one hundred sixty-five".