225503321 has 8 divisors (see below), whose sum is σ = 235920384. Its totient is φ = 215320480.

The previous prime is 225503303. The next prime is 225503347. The reversal of 225503321 is 123305522.

225503321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225503321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225503371) 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, 56585 + ... + 60438.

It is an arithmetic number, because the mean of its divisors is an integer number (29490048).

Almost surely, 2^225503321 is an apocalyptic number.

It is an amenable number.

225503321 is a deficient number, since it is larger than the sum of its proper divisors (10417063).

225503321 is a wasteful number, since it uses less digits than its factorization.

225503321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117111.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 225503321 is about 15016.7679944787. The cubic root of 225503321 is about 608.6733877250.

Adding to 225503321 its reverse (123305522), we get a palindrome (348808843).

The spelling of 225503321 in words is "two hundred twenty-five million, five hundred three thousand, three hundred twenty-one".