225893321 has 2 divisors, whose sum is σ = 225893322. Its totient is φ = 225893320.

The previous prime is 225893279. The next prime is 225893323. The reversal of 225893321 is 123398522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187005625 + 38887696 = 13675^2 + 6236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225893321 is a prime.

Together with 225893323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225893323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112946660 + 112946661.

It is an arithmetic number, because the mean of its divisors is an integer number (112946661).

Almost surely, 2^225893321 is an apocalyptic number.

It is an amenable number.

225893321 is a deficient number, since it is larger than the sum of its proper divisors (1).

225893321 is an equidigital number, since it uses as much as digits as its factorization.

225893321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 225893321 is about 15029.7478688100. The cubic root of 225893321 is about 609.0240786494.

The spelling of 225893321 in words is "two hundred twenty-five million, eight hundred ninety-three thousand, three hundred twenty-one".