2505520164 has 24 divisors (see below), whose sum is σ = 6681387328. Its totient is φ = 715862880.

The previous prime is 2505520153. The next prime is 2505520181. The reversal of 2505520164 is 4610255052.

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, 14913727 + ... + 14913894.

Almost surely, 2^2505520164 is an apocalyptic number.

It is an amenable number.

2505520164 is an abundant number, since it is smaller than the sum of its proper divisors (4175867164).

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

2505520164 is a wasteful number, since it uses less digits than its factorization.

2505520164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29827635 (or 29827633 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2505520164 is about 50055.1712013854. The cubic root of 2505520164 is about 1358.2070093203.

The spelling of 2505520164 in words is "two billion, five hundred five million, five hundred twenty thousand, one hundred sixty-four".