2565755157 has 16 divisors (see below), whose sum is σ = 3910592000. Its totient is φ = 1465819632.

The previous prime is 2565755123. The next prime is 2565755161. The reversal of 2565755157 is 7515575652.

It is not a de Polignac number, because 2565755157 - 2⁸ = 2565754901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565755177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108594 + ... + 130092.

It is an arithmetic number, because the mean of its divisors is an integer number (244412000).

Almost surely, 2^2565755157 is an apocalyptic number.

It is an amenable number.

2565755157 is a deficient number, since it is larger than the sum of its proper divisors (1344836843).

2565755157 is a wasteful number, since it uses less digits than its factorization.

2565755157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27192.

The product of its digits is 1837500, while the sum is 48.

The square root of 2565755157 is about 50653.2837731178. The cubic root of 2565755157 is about 1369.0051130244.

The spelling of 2565755157 in words is "two billion, five hundred sixty-five million, seven hundred fifty-five thousand, one hundred fifty-seven".