225431042 has 4 divisors (see below), whose sum is σ = 338146566. Its totient is φ = 112715520.

The previous prime is 225431023. The next prime is 225431077. The reversal of 225431042 is 240134522.

It is a happy number.

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., 224970001 + 461041 = 14999^2 + 679^2 .

It is a junction number, because it is equal to n+sod(n) for n = 225430999 and 225431017.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56357759 + ... + 56357762.

Almost surely, 2^225431042 is an apocalyptic number.

225431042 is a deficient number, since it is larger than the sum of its proper divisors (112715524).

225431042 is a wasteful number, since it uses less digits than its factorization.

225431042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112715523.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 225431042 is about 15014.3611918723. The cubic root of 225431042 is about 608.6083495032.

Adding to 225431042 its reverse (240134522), we get a palindrome (465565564).

The spelling of 225431042 in words is "two hundred twenty-five million, four hundred thirty-one thousand, forty-two".