225225321 has 8 divisors (see below), whose sum is σ = 300929280. Its totient is φ = 149835792.

The previous prime is 225225307. The next prime is 225225379. The reversal of 225225321 is 123522522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225225321 - 2¹⁰ = 225224297 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 225225291 and 225225300.

It is not an unprimeable number, because it can be changed into a prime (225225421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76930 + ... + 79803.

It is an arithmetic number, because the mean of its divisors is an integer number (37616160).

Almost surely, 2^225225321 is an apocalyptic number.

It is an amenable number.

225225321 is a deficient number, since it is larger than the sum of its proper divisors (75703959).

225225321 is a wasteful number, since it uses less digits than its factorization.

225225321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157215.

The product of its digits is 2400, while the sum is 24.

The square root of 225225321 is about 15007.5088205871. The cubic root of 225225321 is about 608.4231611310.

Adding to 225225321 its reverse (123522522), we get a palindrome (348747843).

The spelling of 225225321 in words is "two hundred twenty-five million, two hundred twenty-five thousand, three hundred twenty-one".