2566274805 has 80 divisors (see below), whose sum is σ = 4873841280. Its totient is φ = 1288234368.

The previous prime is 2566274801. The next prime is 2566274807. The reversal of 2566274805 is 5084726652.

2566274805 is a `hidden beast` number, since 2 + 566 + 2 + 7 + 4 + 80 + 5 = 666.

It is not a de Polignac number, because 2566274805 - 2² = 2566274801 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566274801) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1284067 + ... + 1286063.

It is an arithmetic number, because the mean of its divisors is an integer number (60923016).

Almost surely, 2^2566274805 is an apocalyptic number.

It is an amenable number.

2566274805 is a deficient number, since it is larger than the sum of its proper divisors (2307566475).

2566274805 is a wasteful number, since it uses less digits than its factorization.

2566274805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200 (or 2191 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The square root of 2566274805 is about 50658.4129735624. The cubic root of 2566274805 is about 1369.0975293182.

The spelling of 2566274805 in words is "two billion, five hundred sixty-six million, two hundred seventy-four thousand, eight hundred five".