225400222 has 4 divisors (see below), whose sum is σ = 338100336. Its totient is φ = 112700110.

The previous prime is 225400213. The next prime is 225400223. The reversal of 225400222 is 222004522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222004522 = 2 ⋅111002261.

It is a self number, because there is not a number n which added to its sum of digits gives 225400222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225400223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56350054 + ... + 56350057.

It is an arithmetic number, because the mean of its divisors is an integer number (84525084).

Almost surely, 2^225400222 is an apocalyptic number.

225400222 is a deficient number, since it is larger than the sum of its proper divisors (112700114).

225400222 is a wasteful number, since it uses less digits than its factorization.

225400222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112700113.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 225400222 is about 15013.3348060982. The cubic root of 225400222 is about 608.5806127668.

Adding to 225400222 its reverse (222004522), we get a palindrome (447404744).

The spelling of 225400222 in words is "two hundred twenty-five million, four hundred thousand, two hundred twenty-two".