225820018 has 8 divisors (see below), whose sum is σ = 338849280. Its totient is φ = 112870260.

The previous prime is 225819983. The next prime is 225820031. The reversal of 225820018 is 810028522.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12178 + ... + 24493.

It is an arithmetic number, because the mean of its divisors is an integer number (42356160).

Almost surely, 2^225820018 is an apocalyptic number.

225820018 is a deficient number, since it is larger than the sum of its proper divisors (113029262).

225820018 is a wasteful number, since it uses less digits than its factorization.

225820018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39752.

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 225820018 is about 15027.3090738162. The cubic root of 225820018 is about 608.9581948631.

The spelling of 225820018 in words is "two hundred twenty-five million, eight hundred twenty thousand, eighteen".