2565663064 has 32 divisors (see below), whose sum is σ = 5028894720. Its totient is φ = 1224827296.

The previous prime is 2565663059. The next prime is 2565663077. The reversal of 2565663064 is 4603665652.

2565663064 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 2565663064.

It is a congruent number.

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, 91209 + ... + 115975.

It is an arithmetic number, because the mean of its divisors is an integer number (157152960).

Almost surely, 2^2565663064 is an apocalyptic number.

It is an amenable number.

2565663064 is a deficient number, since it is larger than the sum of its proper divisors (2463231656).

2565663064 is a wasteful number, since it uses less digits than its factorization.

2565663064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25359 (or 25355 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 43.

The square root of 2565663064 is about 50652.3747123469. The cubic root of 2565663064 is about 1368.9887335326.

The spelling of 2565663064 in words is "two billion, five hundred sixty-five million, six hundred sixty-three thousand, sixty-four".