2545634655 has 64 divisors (see below), whose sum is σ = 4803235200. Its totient is φ = 1274757120.

The previous prime is 2545634647. The next prime is 2545634671. The reversal of 2545634655 is 5564365452.

2545634655 is a `hidden beast` number, since 2 + 5 + 4 + 5 + 634 + 6 + 5 + 5 = 666.

It is not a de Polignac number, because 2545634655 - 2³ = 2545634647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2545634655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1194631 + ... + 1196759.

It is an arithmetic number, because the mean of its divisors is an integer number (75050550).

Almost surely, 2^2545634655 is an apocalyptic number.

2545634655 is a deficient number, since it is larger than the sum of its proper divisors (2257600545).

2545634655 is a wasteful number, since it uses less digits than its factorization.

2545634655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681 (or 2675 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 45.

The square root of 2545634655 is about 50454.2828211838. The cubic root of 2545634655 is about 1365.4171650924.

The spelling of 2545634655 in words is "two billion, five hundred forty-five million, six hundred thirty-four thousand, six hundred fifty-five".