56221725 has 24 divisors (see below), whose sum is σ = 106233280. Its totient is φ = 25701120.

The previous prime is 56221721. The next prime is 56221727. The reversal of 56221725 is 52712265.

56221725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56221725 - 2² = 56221721 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56221692 and 56221701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56221721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53020 + ... + 54069.

Almost surely, 2^56221725 is an apocalyptic number.

It is an amenable number.

56221725 is a deficient number, since it is larger than the sum of its proper divisors (50011555).

56221725 is a wasteful number, since it uses less digits than its factorization.

56221725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107109 (or 107104 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 56221725 is about 7498.1147630588. The cubic root of 56221725 is about 383.0905057354.

The spelling of 56221725 in words is "fifty-six million, two hundred twenty-one thousand, seven hundred twenty-five".