225215056 has 40 divisors (see below), whose sum is σ = 501084000. Its totient is φ = 96981120.

The previous prime is 225215047. The next prime is 225215063. The reversal of 225215056 is 650512522.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30331 + ... + 37018.

It is an arithmetic number, because the mean of its divisors is an integer number (12527100).

Almost surely, 2^225215056 is an apocalyptic number.

It is an amenable number.

225215056 is an abundant number, since it is smaller than the sum of its proper divisors (275868944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225215056 is a wasteful number, since it uses less digits than its factorization.

225215056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67387 (or 67381 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 225215056 is about 15007.1668212225. The cubic root of 225215056 is about 608.4139177082.

Adding to 225215056 its reverse (650512522), we get a palindrome (875727578).

The spelling of 225215056 in words is "two hundred twenty-five million, two hundred fifteen thousand, fifty-six".