225494447 has 2 divisors, whose sum is σ = 225494448. Its totient is φ = 225494446.

The previous prime is 225494441. The next prime is 225494471. The reversal of 225494447 is 744494522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225494447 - 2⁴ = 225494431 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 (225494441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112747223 + 112747224.

It is an arithmetic number, because the mean of its divisors is an integer number (112747224).

Almost surely, 2^225494447 is an apocalyptic number.

225494447 is a deficient number, since it is larger than the sum of its proper divisors (1).

225494447 is an equidigital number, since it uses as much as digits as its factorization.

225494447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 41.

The square root of 225494447 is about 15016.4725218674. The cubic root of 225494447 is about 608.6654034546.

The spelling of 225494447 in words is "two hundred twenty-five million, four hundred ninety-four thousand, four hundred forty-seven".