2566505042 has 16 divisors (see below), whose sum is σ = 3888622080. Its totient is φ = 1270325952.

The previous prime is 2566505023. The next prime is 2566505063. The reversal of 2566505042 is 2405056652.

It is a super-2 number, since 2×2566505042² = 13173896261222843528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2566504993 and 2566505011.

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, 188459 + ... + 201617.

It is an arithmetic number, because the mean of its divisors is an integer number (243038880).

Almost surely, 2^2566505042 is an apocalyptic number.

2566505042 is a deficient number, since it is larger than the sum of its proper divisors (1322117038).

2566505042 is a wasteful number, since it uses less digits than its factorization.

2566505042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14137.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 2566505042 is about 50660.6853684393. The cubic root of 2566505042 is about 1369.1384716055.

The spelling of 2566505042 in words is "two billion, five hundred sixty-six million, five hundred five thousand, forty-two".