2125909579 has 4 divisors (see below), whose sum is σ = 2126012176. Its totient is φ = 2125806984.

The previous prime is 2125909571. The next prime is 2125909589. The reversal of 2125909579 is 9759095212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2125909579 - 2³ = 2125909571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2125909571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8079 + ... + 65704.

It is an arithmetic number, because the mean of its divisors is an integer number (531503044).

Almost surely, 2^2125909579 is an apocalyptic number.

2125909579 is a deficient number, since it is larger than the sum of its proper divisors (102597).

2125909579 is an equidigital number, since it uses as much as digits as its factorization.

2125909579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102596.

The product of its (nonzero) digits is 510300, while the sum is 49.

The square root of 2125909579 is about 46107.5870004059. The cubic root of 2125909579 is about 1285.8242031818.

The spelling of 2125909579 in words is "two billion, one hundred twenty-five million, nine hundred nine thousand, five hundred seventy-nine".