2125856673 has 24 divisors (see below), whose sum is σ = 3242820672. Its totient is φ = 1339275168.

The previous prime is 2125856657. The next prime is 2125856701. The reversal of 2125856673 is 3766585212.

2125856673 is a `hidden beast` number, since 2 + 1 + 2 + 585 + 6 + 67 + 3 = 666.

It is not a de Polignac number, because 2125856673 - 2⁴ = 2125856657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2125856573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44686 + ... + 79047.

It is an arithmetic number, because the mean of its divisors is an integer number (135117528).

Almost surely, 2^2125856673 is an apocalyptic number.

2125856673 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2125856673 is a deficient number, since it is larger than the sum of its proper divisors (1116963999).

2125856673 is a wasteful number, since it uses less digits than its factorization.

2125856673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123845 (or 123842 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 2125856673 is about 46107.0132734707. The cubic root of 2125856673 is about 1285.8135366291.

The spelling of 2125856673 in words is "two billion, one hundred twenty-five million, eight hundred fifty-six thousand, six hundred seventy-three".