2565125131 has 2 divisors, whose sum is σ = 2565125132. Its totient is φ = 2565125130.

The previous prime is 2565125051. The next prime is 2565125141. The reversal of 2565125131 is 1315215652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2565125131 - 2⁹ = 2565124619 is a prime.

It is a super-2 number, since 2×2565125131² = 13159733875375534322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2565125093 and 2565125102.

It is not a weakly prime, because it can be changed into another prime (2565125141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282562565 + 1282562566.

It is an arithmetic number, because the mean of its divisors is an integer number (1282562566).

Almost surely, 2^2565125131 is an apocalyptic number.

2565125131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565125131 is an equidigital number, since it uses as much as digits as its factorization.

2565125131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9000, while the sum is 31.

The square root of 2565125131 is about 50647.0643867934. The cubic root of 2565125131 is about 1368.8930499255.

The spelling of 2565125131 in words is "two billion, five hundred sixty-five million, one hundred twenty-five thousand, one hundred thirty-one".