2565355236 has 12 divisors (see below), whose sum is σ = 5985828912. Its totient is φ = 855118408.

The previous prime is 2565355231. The next prime is 2565355241. The reversal of 2565355236 is 6325535652.

It is an interprime number because it is at equal distance from previous prime (2565355231) and next prime (2565355241).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2565355231) 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, 106889790 + ... + 106889813.

It is an arithmetic number, because the mean of its divisors is an integer number (498819076).

Almost surely, 2^2565355236 is an apocalyptic number.

It is an amenable number.

2565355236 is an abundant number, since it is smaller than the sum of its proper divisors (3420473676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2565355236 is a wasteful number, since it uses less digits than its factorization.

2565355236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213779610 (or 213779608 counting only the distinct ones).

The product of its digits is 810000, while the sum is 42.

The square root of 2565355236 is about 50649.3359877501. The cubic root of 2565355236 is about 1368.9339809653.

The spelling of 2565355236 in words is "two billion, five hundred sixty-five million, three hundred fifty-five thousand, two hundred thirty-six".