225997273 has 2 divisors, whose sum is σ = 225997274. Its totient is φ = 225997272.

The previous prime is 225997249. The next prime is 225997349. The reversal of 225997273 is 372799522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128323584 + 97673689 = 11328^2 + 9883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225997273 is a prime.

It is not a weakly prime, because it can be changed into another prime (225997873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112998636 + 112998637.

It is an arithmetic number, because the mean of its divisors is an integer number (112998637).

Almost surely, 2^225997273 is an apocalyptic number.

It is an amenable number.

225997273 is a deficient number, since it is larger than the sum of its proper divisors (1).

225997273 is an equidigital number, since it uses as much as digits as its factorization.

225997273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 46.

The square root of 225997273 is about 15033.2056794285. The cubic root of 225997273 is about 609.1174849263.

The spelling of 225997273 in words is "two hundred twenty-five million, nine hundred ninety-seven thousand, two hundred seventy-three".