2505643984 has 20 divisors (see below), whose sum is σ = 4859735584. Its totient is φ = 1251518688.

The previous prime is 2505643961. The next prime is 2505644003. The reversal of 2505643984 is 4893465052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65502 + ... + 96445.

Almost surely, 2^2505643984 is an apocalyptic number.

It is an amenable number.

2505643984 is a deficient number, since it is larger than the sum of its proper divisors (2354091600).

2505643984 is a wasteful number, since it uses less digits than its factorization.

2505643984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162922 (or 162916 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

The square root of 2505643984 is about 50056.4080213513. The cubic root of 2505643984 is about 1358.2293826414.

The spelling of 2505643984 in words is "two billion, five hundred five million, six hundred forty-three thousand, nine hundred eighty-four".