2565516480 has 56 divisors (see below), whose sum is σ = 8145517872. Its totient is φ = 684137472.

The previous prime is 2565516449. The next prime is 2565516491. The reversal of 2565516480 is 846155652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1335247 + ... + 1337166.

Almost surely, 2^2565516480 is an apocalyptic number.

2565516480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2565516480 is an abundant number, since it is smaller than the sum of its proper divisors (5580001392).

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

2565516480 is a wasteful number, since it uses less digits than its factorization.

2565516480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672433 (or 2672423 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 42.

The square root of 2565516480 is about 50650.9277308916. The cubic root of 2565516480 is about 1368.9626615633.

The spelling of 2565516480 in words is "two billion, five hundred sixty-five million, five hundred sixteen thousand, four hundred eighty".