2569507139 has 2 divisors, whose sum is σ = 2569507140. Its totient is φ = 2569507138.

The previous prime is 2569507103. The next prime is 2569507141. The reversal of 2569507139 is 9317059652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2569507139 - 2¹² = 2569503043 is a prime.

Together with 2569507141, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2569507093 and 2569507102.

It is not a weakly prime, because it can be changed into another prime (2569507639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1284753569 + 1284753570.

It is an arithmetic number, because the mean of its divisors is an integer number (1284753570).

Almost surely, 2^2569507139 is an apocalyptic number.

2569507139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2569507139 is an equidigital number, since it uses as much as digits as its factorization.

2569507139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 510300, while the sum is 47.

The square root of 2569507139 is about 50690.3061639994. The cubic root of 2569507139 is about 1369.6721006511.

The spelling of 2569507139 in words is "two billion, five hundred sixty-nine million, five hundred seven thousand, one hundred thirty-nine".