2565097559 has 2 divisors, whose sum is σ = 2565097560. Its totient is φ = 2565097558.

The previous prime is 2565097553. The next prime is 2565097571. The reversal of 2565097559 is 9557905652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2565097559 - 2⁴ = 2565097543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2565097559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2565097553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282548779 + 1282548780.

It is an arithmetic number, because the mean of its divisors is an integer number (1282548780).

Almost surely, 2^2565097559 is an apocalyptic number.

2565097559 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565097559 is an equidigital number, since it uses as much as digits as its factorization.

2565097559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4252500, while the sum is 53.

The square root of 2565097559 is about 50646.7921886471. The cubic root of 2565097559 is about 1368.8881452584. Note that the first 3 decimals are identical.

The spelling of 2565097559 in words is "two billion, five hundred sixty-five million, ninety-seven thousand, five hundred fifty-nine".