225890447 has 2 divisors, whose sum is σ = 225890448. Its totient is φ = 225890446.

The previous prime is 225890419. The next prime is 225890473. The reversal of 225890447 is 744098522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225890447 - 2⁸ = 225890191 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225890417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112945223 + 112945224.

It is an arithmetic number, because the mean of its divisors is an integer number (112945224).

Almost surely, 2^225890447 is an apocalyptic number.

225890447 is a deficient number, since it is larger than the sum of its proper divisors (1).

225890447 is an equidigital number, since it uses as much as digits as its factorization.

225890447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 225890447 is about 15029.6522581196. The cubic root of 225890447 is about 609.0214958039.

The spelling of 225890447 in words is "two hundred twenty-five million, eight hundred ninety thousand, four hundred forty-seven".