2566425139 has 2 divisors, whose sum is σ = 2566425140. Its totient is φ = 2566425138.

The previous prime is 2566425089. The next prime is 2566425161. The reversal of 2566425139 is 9315246652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2566425139 - 2¹⁷ = 2566294067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2566425095 and 2566425104.

It is not a weakly prime, because it can be changed into another prime (2566425539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283212569 + 1283212570.

It is an arithmetic number, because the mean of its divisors is an integer number (1283212570).

Almost surely, 2^2566425139 is an apocalyptic number.

2566425139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2566425139 is an equidigital number, since it uses as much as digits as its factorization.

2566425139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 43.

The square root of 2566425139 is about 50659.8967527570. The cubic root of 2566425139 is about 1369.1242629957.

The spelling of 2566425139 in words is "two billion, five hundred sixty-six million, four hundred twenty-five thousand, one hundred thirty-nine".