225317018 has 4 divisors (see below), whose sum is σ = 337975530. Its totient is φ = 112658508.

The previous prime is 225317003. The next prime is 225317051. The reversal of 225317018 is 810713522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 142014889 + 83302129 = 11917^2 + 9127^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 56329253 + ... + 56329256.

Almost surely, 2^225317018 is an apocalyptic number.

225317018 is a deficient number, since it is larger than the sum of its proper divisors (112658512).

225317018 is a wasteful number, since it uses less digits than its factorization.

225317018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112658511.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 225317018 is about 15010.5635470491. The cubic root of 225317018 is about 608.5057199491.

The spelling of 225317018 in words is "two hundred twenty-five million, three hundred seventeen thousand, eighteen".