225204331 has 4 divisors (see below), whose sum is σ = 245677464. Its totient is φ = 204731200.

The previous prime is 225204313. The next prime is 225204347. The reversal of 225204331 is 133402522.

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

It is a cyclic number.

It is not a de Polignac number, because 225204331 - 2⁹ = 225203819 is a prime.

It is a super-2 number, since 2×225204331² = 101433981402315122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225204361) 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, 10236550 + ... + 10236571.

It is an arithmetic number, because the mean of its divisors is an integer number (61419366).

Almost surely, 2^225204331 is an apocalyptic number.

225204331 is a deficient number, since it is larger than the sum of its proper divisors (20473133).

225204331 is a wasteful number, since it uses less digits than its factorization.

225204331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20473132.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 225204331 is about 15006.8094876959. The cubic root of 225204331 is about 608.4042597647.

Adding to 225204331 its reverse (133402522), we get a palindrome (358606853).

The spelling of 225204331 in words is "two hundred twenty-five million, two hundred four thousand, three hundred thirty-one".