2560520645 has 16 divisors (see below), whose sum is σ = 3130513920. Its totient is φ = 2009953344.

The previous prime is 2560520639. The next prime is 2560520681. The reversal of 2560520645 is 5460250652.

2560520645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2560520645 - 2²⁸ = 2292085189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156524 + ... + 172106.

It is an arithmetic number, because the mean of its divisors is an integer number (195657120).

Almost surely, 2^2560520645 is an apocalyptic number.

It is an amenable number.

2560520645 is a deficient number, since it is larger than the sum of its proper divisors (569993275).

2560520645 is a wasteful number, since it uses less digits than its factorization.

2560520645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16204.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 2560520645 is about 50601.5873762869. The cubic root of 2560520645 is about 1368.0734896412.

The spelling of 2560520645 in words is "two billion, five hundred sixty million, five hundred twenty thousand, six hundred forty-five".