225642122 has 16 divisors (see below), whose sum is σ = 358680960. Its totient is φ = 106093248.

The previous prime is 225642083. The next prime is 225642133. The reversal of 225642122 is 221246522.

It is a junction number, because it is equal to n+sod(n) for n = 225642091 and 225642100.

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 7 ways as a sum of consecutive naturals, for example, 53279 + ... + 57357.

It is an arithmetic number, because the mean of its divisors is an integer number (22417560).

Almost surely, 2^225642122 is an apocalyptic number.

225642122 is a deficient number, since it is larger than the sum of its proper divisors (133038838).

225642122 is a wasteful number, since it uses less digits than its factorization.

225642122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5725.

The product of its digits is 3840, while the sum is 26.

The square root of 225642122 is about 15021.3888172832. The cubic root of 225642122 is about 608.7982449357.

Adding to 225642122 its reverse (221246522), we get a palindrome (446888644).

The spelling of 225642122 in words is "two hundred twenty-five million, six hundred forty-two thousand, one hundred twenty-two".