225997249 has 2 divisors, whose sum is σ = 225997250. Its totient is φ = 225997248.

The previous prime is 225997237. The next prime is 225997273. The reversal of 225997249 is 942799522.

225997249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125596849 + 100400400 = 11207^2 + 10020^2 .

It is a cyclic number.

It is not a de Polignac number, because 225997249 - 2⁵ = 225997217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225997349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112998624 + 112998625.

It is an arithmetic number, because the mean of its divisors is an integer number (112998625).

Almost surely, 2^225997249 is an apocalyptic number.

It is an amenable number.

225997249 is a deficient number, since it is larger than the sum of its proper divisors (1).

225997249 is an equidigital number, since it uses as much as digits as its factorization.

225997249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 49.

The square root of 225997249 is about 15033.2048811955. The cubic root of 225997249 is about 609.1174633643.

The spelling of 225997249 in words is "two hundred twenty-five million, nine hundred ninety-seven thousand, two hundred forty-nine".