2565097567 has 4 divisors (see below), whose sum is σ = 2574161800. Its totient is φ = 2556033336.

The previous prime is 2565097559. The next prime is 2565097571. The reversal of 2565097567 is 7657905652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2565097567 - 2³ = 2565097559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565097537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4531692 + ... + 4532257.

It is an arithmetic number, because the mean of its divisors is an integer number (643540450).

Almost surely, 2^2565097567 is an apocalyptic number.

2565097567 is a deficient number, since it is larger than the sum of its proper divisors (9064233).

2565097567 is an equidigital number, since it uses as much as digits as its factorization.

2565097567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9064232.

The product of its (nonzero) digits is 3969000, while the sum is 52.

The square root of 2565097567 is about 50646.7922676254. The cubic root of 2565097567 is about 1368.8881466815. Note that the first 3 decimals are identical.

The spelling of 2565097567 in words is "two billion, five hundred sixty-five million, ninety-seven thousand, five hundred sixty-seven".