2565366606 has 64 divisors (see below), whose sum is σ = 6584924160. Its totient is φ = 731652480.

The previous prime is 2565366539. The next prime is 2565366607. The reversal of 2565366606 is 6066635652.

It is a super-2 number, since 2×2565366606² = 13162211646359918472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565366607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116926 + ... + 137121.

It is an arithmetic number, because the mean of its divisors is an integer number (102889440).

Almost surely, 2^2565366606 is an apocalyptic number.

2565366606 is an abundant number, since it is smaller than the sum of its proper divisors (4019557554).

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

2565366606 is a wasteful number, since it uses less digits than its factorization.

2565366606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254086 (or 254080 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The square root of 2565366606 is about 50649.4482299659. The cubic root of 2565366606 is about 1368.9360033956.

The spelling of 2565366606 in words is "two billion, five hundred sixty-five million, three hundred sixty-six thousand, six hundred six".