2122131425 has 12 divisors (see below), whose sum is σ = 2668507776. Its totient is φ = 1673792400.

The previous prime is 2122131421. The next prime is 2122131433. The reversal of 2122131425 is 5241312212.

It is not a de Polignac number, because 2122131425 - 2² = 2122131421 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 2122131425.

It is not an unprimeable number, because it can be changed into a prime (2122131421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 596009 + ... + 599558.

It is an arithmetic number, because the mean of its divisors is an integer number (222375648).

Almost surely, 2^2122131425 is an apocalyptic number.

2122131425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2122131425 is a deficient number, since it is larger than the sum of its proper divisors (546376351).

2122131425 is a wasteful number, since it uses less digits than its factorization.

2122131425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195648 (or 1195643 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 2122131425 is about 46066.5977146131. The cubic root of 2122131425 is about 1285.0620317574.

Adding to 2122131425 its reverse (5241312212), we get a palindrome (7363443637).

The spelling of 2122131425 in words is "two billion, one hundred twenty-two million, one hundred thirty-one thousand, four hundred twenty-five".