2565722530 has 16 divisors (see below), whose sum is σ = 5278057920. Its totient is φ = 879676272.

The previous prime is 2565722483. The next prime is 2565722563. The reversal of 2565722530 is 352275652.

2565722530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2565722530.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18326520 + ... + 18326659.

It is an arithmetic number, because the mean of its divisors is an integer number (329878620).

Almost surely, 2^2565722530 is an apocalyptic number.

2565722530 is an abundant number, since it is smaller than the sum of its proper divisors (2712335390).

2565722530 is a wasteful number, since it uses less digits than its factorization.

2565722530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36653193.

The product of its (nonzero) digits is 126000, while the sum is 37.

The square root of 2565722530 is about 50652.9617100521. The cubic root of 2565722530 is about 1368.9993100909. Note that the first 3 decimals are identical.

The spelling of 2565722530 in words is "two billion, five hundred sixty-five million, seven hundred twenty-two thousand, five hundred thirty".