2125860165 has 48 divisors (see below), whose sum is σ = 4329037440. Its totient is φ = 951431040.

The previous prime is 2125860151. The next prime is 2125860173. The reversal of 2125860165 is 5610685212.

2125860165 is a `hidden beast` number, since 2 + 12 + 586 + 0 + 1 + 65 = 666.

It is not a de Polignac number, because 2125860165 - 2⁵ = 2125860133 is a prime.

It is a super-2 number, since 2×2125860165² = 9038562882267654450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 158745 + ... + 171614.

It is an arithmetic number, because the mean of its divisors is an integer number (90188280).

Almost surely, 2^2125860165 is an apocalyptic number.

It is an amenable number.

2125860165 is an abundant number, since it is smaller than the sum of its proper divisors (2203177275).

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

2125860165 is a wasteful number, since it uses less digits than its factorization.

2125860165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330394 (or 330391 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 2125860165 is about 46107.0511418807. The cubic root of 2125860165 is about 1285.8142406682.

The spelling of 2125860165 in words is "two billion, one hundred twenty-five million, eight hundred sixty thousand, one hundred sixty-five".