2565117707 has 2 divisors, whose sum is σ = 2565117708. Its totient is φ = 2565117706.

The previous prime is 2565117671. The next prime is 2565117767. The reversal of 2565117707 is 7077115652.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2565117707 - 2¹⁸ = 2564855563 is a prime.

It is not a weakly prime, because it can be changed into another prime (2565117767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282558853 + 1282558854.

It is an arithmetic number, because the mean of its divisors is an integer number (1282558854).

Almost surely, 2^2565117707 is an apocalyptic number.

2565117707 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565117707 is an equidigital number, since it uses as much as digits as its factorization.

2565117707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102900, while the sum is 41.

The square root of 2565117707 is about 50646.9910952270. The cubic root of 2565117707 is about 1368.8917293048.

The spelling of 2565117707 in words is "two billion, five hundred sixty-five million, one hundred seventeen thousand, seven hundred seven".