225510321 has 8 divisors (see below), whose sum is σ = 318367584. Its totient is φ = 141496640.

The previous prime is 225510281. The next prime is 225510323. The reversal of 225510321 is 123015522.

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

It is a cyclic number.

It is not a de Polignac number, because 225510321 - 2¹¹ = 225508273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225510323) by changing a digit.

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, 2210835 + ... + 2210936.

It is an arithmetic number, because the mean of its divisors is an integer number (39795948).

Almost surely, 2^225510321 is an apocalyptic number.

It is an amenable number.

225510321 is a deficient number, since it is larger than the sum of its proper divisors (92857263).

225510321 is a wasteful number, since it uses less digits than its factorization.

225510321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421791.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 225510321 is about 15017.0010654591. The cubic root of 225510321 is about 608.6796857397.

Adding to 225510321 its reverse (123015522), we get a palindrome (348525843).

The spelling of 225510321 in words is "two hundred twenty-five million, five hundred ten thousand, three hundred twenty-one".