2565566240355 has 16 divisors (see below), whose sum is σ = 4561006649760. Its totient is φ = 1368301994784.

The previous prime is 2565566240273. The next prime is 2565566240357. The reversal of 2565566240355 is 5530426655652.

2565566240355 is a `hidden beast` number, since 2 + 5 + 6 + 5 + 5 + 6 + 624 + 0 + 3 + 5 + 5 = 666.

2565566240355 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2565566240355 - 2¹⁰ = 2565566239331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2565566240357) 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, 9502097052 + ... + 9502097321.

It is an arithmetic number, because the mean of its divisors is an integer number (285062915610).

Almost surely, 2^{2565566240355} is an apocalyptic number.

2565566240355 is a deficient number, since it is larger than the sum of its proper divisors (1995440409405).

2565566240355 is a wasteful number, since it uses less digits than its factorization.

2565566240355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19004194387 (or 19004194381 counting only the distinct ones).

The product of its (nonzero) digits is 32400000, while the sum is 54.

The spelling of 2565566240355 in words is "two trillion, five hundred sixty-five billion, five hundred sixty-six million, two hundred forty thousand, three hundred fifty-five".