2565166615652 has 12 divisors (see below), whose sum is σ = 4562632423356. Its totient is φ = 1261557351840.

The previous prime is 2565166615619. The next prime is 2565166615717.

2565166615652 is nontrivially palindromic in base 10.

2565166615652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 867237737536 + 1697928878116 = 931256^2 + 1303046^2 .

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5256488723 + ... + 5256489210.

It is an arithmetic number, because the mean of its divisors is an integer number (380219368613).

Almost surely, 2^{2565166615652} is an apocalyptic number.

It is an amenable number.

2565166615652 is a deficient number, since it is larger than the sum of its proper divisors (1997465807704).

2565166615652 is a wasteful number, since it uses less digits than its factorization.

2565166615652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10512977998 (or 10512977996 counting only the distinct ones).

The product of its digits is 19440000, while the sum is 56.

The spelling of 2565166615652 in words is "two trillion, five hundred sixty-five billion, one hundred sixty-six million, six hundred fifteen thousand, six hundred fifty-two".