2565903295880 has 32 divisors (see below), whose sum is σ = 5776888607640. Its totient is φ = 1025720217600.

The previous prime is 2565903295859. The next prime is 2565903295883. The reversal of 2565903295880 is 885923095652.

It can be written as a sum of positive squares in 4 ways, for example, as 2233368846916 + 332534448964 = 1494446^2 + 576658^2 .

It is not an unprimeable number, because it can be changed into a prime (2565903295883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19969559 + ... + 20097638.

Almost surely, 2^{2565903295880} is an apocalyptic number.

2565903295880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2565903295880 is an abundant number, since it is smaller than the sum of its proper divisors (3210985311760).

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

2565903295880 is a wasteful number, since it uses less digits than its factorization.

2565903295880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40068809 (or 40068805 counting only the distinct ones).

The product of its (nonzero) digits is 46656000, while the sum is 62.

The spelling of 2565903295880 in words is "two trillion, five hundred sixty-five billion, nine hundred three million, two hundred ninety-five thousand, eight hundred eighty".