225006017321 has 2 divisors, whose sum is σ = 225006017322. Its totient is φ = 225006017320.

The previous prime is 225006017303. The next prime is 225006017329. The reversal of 225006017321 is 123710600522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204271457296 + 20734560025 = 451964^2 + 143995^2 .

It is a cyclic number.

It is not a de Polignac number, because 225006017321 - 2²² = 225001823017 is a prime.

It is not a weakly prime, because it can be changed into another prime (225006017329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112503008660 + 112503008661.

It is an arithmetic number, because the mean of its divisors is an integer number (112503008661).

Almost surely, 2^225006017321 is an apocalyptic number.

It is an amenable number.

225006017321 is a deficient number, since it is larger than the sum of its proper divisors (1).

225006017321 is an equidigital number, since it uses as much as digits as its factorization.

225006017321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

Adding to 225006017321 its reverse (123710600522), we get a palindrome (348716617843).

The spelling of 225006017321 in words is "two hundred twenty-five billion, six million, seventeen thousand, three hundred twenty-one".