2725521566 has 24 divisors (see below), whose sum is σ = 4361618016. Its totient is φ = 1272938240.

The previous prime is 2725521553. The next prime is 2725521569. The reversal of 2725521566 is 6651255272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2725521569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 636011 + ... + 640281.

It is an arithmetic number, because the mean of its divisors is an integer number (181734084).

Almost surely, 2^2725521566 is an apocalyptic number.

2725521566 is a deficient number, since it is larger than the sum of its proper divisors (1636096450).

2725521566 is a wasteful number, since it uses less digits than its factorization.

2725521566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4564 (or 4427 counting only the distinct ones).

The product of its digits is 252000, while the sum is 41.

The square root of 2725521566 is about 52206.5280017739. The cubic root of 2725521566 is about 1396.8503284757.

The spelling of 2725521566 in words is "two billion, seven hundred twenty-five million, five hundred twenty-one thousand, five hundred sixty-six".