225340618 has 4 divisors (see below), whose sum is σ = 338010930. Its totient is φ = 112670308.

The previous prime is 225340571. The next prime is 225340657. The reversal of 225340618 is 816043522.

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., 186240609 + 39100009 = 13647^2 + 6253^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 225340618.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56335153 + ... + 56335156.

Almost surely, 2^225340618 is an apocalyptic number.

225340618 is a deficient number, since it is larger than the sum of its proper divisors (112670312).

225340618 is a wasteful number, since it uses less digits than its factorization.

225340618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112670311.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 225340618 is about 15011.3496395228. The cubic root of 225340618 is about 608.5269644365.

The spelling of 225340618 in words is "two hundred twenty-five million, three hundred forty thousand, six hundred eighteen".