2115425791 has 4 divisors (see below), whose sum is σ = 2167021584. Its totient is φ = 2063830000.

The previous prime is 2115425783. The next prime is 2115425797. The reversal of 2115425791 is 1975245112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2115425791 - 2³ = 2115425783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2115425791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115425797) 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, 25797835 + ... + 25797916.

It is an arithmetic number, because the mean of its divisors is an integer number (541755396).

Almost surely, 2^2115425791 is an apocalyptic number.

2115425791 is a deficient number, since it is larger than the sum of its proper divisors (51595793).

2115425791 is an equidigital number, since it uses as much as digits as its factorization.

2115425791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51595792.

The product of its digits is 25200, while the sum is 37.

The square root of 2115425791 is about 45993.7581743436. The cubic root of 2115425791 is about 1283.7070657318.

The spelling of 2115425791 in words is "two billion, one hundred fifteen million, four hundred twenty-five thousand, seven hundred ninety-one".