225290368 has 16 divisors (see below), whose sum is σ = 448820910. Its totient is φ = 112645120.

The previous prime is 225290363. The next prime is 225290369. The reversal of 225290368 is 863092522.

It can be written as a sum of positive squares in only one way, i.e., 205291584 + 19998784 = 14328^2 + 4472^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (225290363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 879913 + ... + 880168.

Almost surely, 2^225290368 is an apocalyptic number.

It is an amenable number.

225290368 is a deficient number, since it is larger than the sum of its proper divisors (223530542).

225290368 is an equidigital number, since it uses as much as digits as its factorization.

225290368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760095 (or 1760083 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 225290368 is about 15009.6758126217. The cubic root of 225290368 is about 608.4817280983.

The spelling of 225290368 in words is "two hundred twenty-five million, two hundred ninety thousand, three hundred sixty-eight".