225616918 has 8 divisors (see below), whose sum is σ = 343973520. Its totient is φ = 110959080.

The previous prime is 225616903. The next prime is 225616927. The reversal of 225616918 is 819616522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 924538 + ... + 924781.

It is an arithmetic number, because the mean of its divisors is an integer number (42996690).

Almost surely, 2^225616918 is an apocalyptic number.

225616918 is a deficient number, since it is larger than the sum of its proper divisors (118356602).

225616918 is a wasteful number, since it uses less digits than its factorization.

225616918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849382.

The product of its digits is 51840, while the sum is 40.

The square root of 225616918 is about 15020.5498567795. The cubic root of 225616918 is about 608.7755767061.

The spelling of 225616918 in words is "two hundred twenty-five million, six hundred sixteen thousand, nine hundred eighteen".