2505664554 has 32 divisors (see below), whose sum is σ = 5213160000. Its totient is φ = 801905664.

The previous prime is 2505664547. The next prime is 2505664571. The reversal of 2505664554 is 4554665052.

It is a happy 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, 9079 + ... + 71370.

It is an arithmetic number, because the mean of its divisors is an integer number (162911250).

Almost surely, 2^2505664554 is an apocalyptic number.

2505664554 is an abundant number, since it is smaller than the sum of its proper divisors (2707495446).

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

2505664554 is a wasteful number, since it uses less digits than its factorization.

2505664554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80662.

The product of its (nonzero) digits is 720000, while the sum is 42.

The square root of 2505664554 is about 50056.6134891285. The cubic root of 2505664554 is about 1358.2330994107.

The spelling of 2505664554 in words is "two billion, five hundred five million, six hundred sixty-four thousand, five hundred fifty-four".