225333431 has 4 divisors (see below), whose sum is σ = 225734232. Its totient is φ = 224932632.

The previous prime is 225333421. The next prime is 225333443. The reversal of 225333431 is 134333522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225333431 is a prime.

It is a super-2 number, since 2×225333431² = 101550310252463522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225333431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225333401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199556 + ... + 200681.

It is an arithmetic number, because the mean of its divisors is an integer number (56433558).

Almost surely, 2^225333431 is an apocalyptic number.

225333431 is a deficient number, since it is larger than the sum of its proper divisors (400801).

225333431 is an equidigital number, since it uses as much as digits as its factorization.

225333431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400800.

The product of its digits is 6480, while the sum is 26.

The square root of 225333431 is about 15011.1102520766. The cubic root of 225333431 is about 608.5204949270.

Adding to 225333431 its reverse (134333522), we get a palindrome (359666953).

Subtracting from 225333431 its reverse (134333522), we obtain a palindrome (90999909).

The spelling of 225333431 in words is "two hundred twenty-five million, three hundred thirty-three thousand, four hundred thirty-one".