56216225 has 12 divisors (see below), whose sum is σ = 75070716. Its totient is φ = 41513280.

The previous prime is 56216221. The next prime is 56216249. The reversal of 56216225 is 52261265.

56216225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 19298449 + 36917776 = 4393^2 + 6076^2 .

It is not a de Polignac number, because 56216225 - 2² = 56216221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56216221) 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 11 ways as a sum of consecutive naturals, for example, 86162 + ... + 86811.

It is an arithmetic number, because the mean of its divisors is an integer number (6255893).

Almost surely, 2^56216225 is an apocalyptic number.

It is an amenable number.

56216225 is a deficient number, since it is larger than the sum of its proper divisors (18854491).

56216225 is a wasteful number, since it uses less digits than its factorization.

56216225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172996 (or 172991 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 56216225 is about 7497.7479952316. The cubic root of 56216225 is about 383.0780131359.

The spelling of 56216225 in words is "fifty-six million, two hundred sixteen thousand, two hundred twenty-five".