225004321 has 4 divisors (see below), whose sum is σ = 225080752. Its totient is φ = 224927892.

The previous prime is 225004309. The next prime is 225004349. The reversal of 225004321 is 123400522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225004321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225004361) 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 3 ways as a sum of consecutive naturals, for example, 33615 + ... + 39748.

It is an arithmetic number, because the mean of its divisors is an integer number (56270188).

Almost surely, 2^225004321 is an apocalyptic number.

It is an amenable number.

225004321 is a deficient number, since it is larger than the sum of its proper divisors (76431).

225004321 is an equidigital number, since it uses as much as digits as its factorization.

225004321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76430.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 225004321 is about 15000.1440326418. The cubic root of 225004321 is about 608.2240930428.

Adding to 225004321 its reverse (123400522), we get a palindrome (348404843).

The spelling of 225004321 in words is "two hundred twenty-five million, four thousand, three hundred twenty-one".