56156225 has 24 divisors (see below), whose sum is σ = 73328640. Its totient is φ = 42577920.

The previous prime is 56156213. The next prime is 56156227. The reversal of 56156225 is 52265165.

It is not a de Polignac number, because 56156225 - 2⁸ = 56155969 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56156191 and 56156200.

It is not an unprimeable number, because it can be changed into a prime (56156227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72641 + ... + 73409.

It is an arithmetic number, because the mean of its divisors is an integer number (3055360).

Almost surely, 2^56156225 is an apocalyptic number.

It is an amenable number.

56156225 is a deficient number, since it is larger than the sum of its proper divisors (17172415).

56156225 is a wasteful number, since it uses less digits than its factorization.

56156225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929 (or 924 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The square root of 56156225 is about 7493.7457256035. The cubic root of 56156225 is about 382.9416772715.

The spelling of 56156225 in words is "fifty-six million, one hundred fifty-six thousand, two hundred twenty-five".