2566555042 has 32 divisors (see below), whose sum is σ = 4224078720. Its totient is φ = 1164145920.

The previous prime is 2566555039. The next prime is 2566555063. The reversal of 2566555042 is 2405556652.

It is a junction number, because it is equal to n+sod(n) for n = 2566554986 and 2566555004.

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, 679443 + ... + 683209.

It is an arithmetic number, because the mean of its divisors is an integer number (132002460).

Almost surely, 2^2566555042 is an apocalyptic number.

2566555042 is a deficient number, since it is larger than the sum of its proper divisors (1657523678).

2566555042 is a wasteful number, since it uses less digits than its factorization.

2566555042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4506.

The product of its (nonzero) digits is 360000, while the sum is 40.

The square root of 2566555042 is about 50661.1788453447. The cubic root of 2566555042 is about 1369.1473626172.

The spelling of 2566555042 in words is "two billion, five hundred sixty-six million, five hundred fifty-five thousand, forty-two".