225280816 has 20 divisors (see below), whose sum is σ = 451533600. Its totient is φ = 108756032.

The previous prime is 225280789. The next prime is 225280819. The reversal of 225280816 is 618082522.

225280816 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (225280819) 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 3 ways as a sum of consecutive naturals, for example, 242296 + ... + 243223.

It is an arithmetic number, because the mean of its divisors is an integer number (22576680).

Almost surely, 2^225280816 is an apocalyptic number.

It is an amenable number.

225280816 is an abundant number, since it is smaller than the sum of its proper divisors (226252784).

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

225280816 is a wasteful number, since it uses less digits than its factorization.

225280816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485556 (or 485550 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 225280816 is about 15009.3576145017. The cubic root of 225280816 is about 608.4731283822.

The spelling of 225280816 in words is "two hundred twenty-five million, two hundred eighty thousand, eight hundred sixteen".