56540440225 has 24 divisors (see below), whose sum is σ = 71316546560. Its totient is φ = 44459176320.

The previous prime is 56540440181. The next prime is 56540440249. The reversal of 56540440225 is 52204404565.

It is a happy number.

It is not a de Polignac number, because 56540440225 - 2¹⁹ = 56539915937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 376237 + ... + 504613.

Almost surely, 2^56540440225 is an apocalyptic number.

It is an amenable number.

56540440225 is a deficient number, since it is larger than the sum of its proper divisors (14776106335).

56540440225 is a wasteful number, since it uses less digits than its factorization.

56540440225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128689 (or 128684 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 37.

The spelling of 56540440225 in words is "fifty-six billion, five hundred forty million, four hundred forty thousand, two hundred twenty-five".