225291571 has 2 divisors, whose sum is σ = 225291572. Its totient is φ = 225291570.

The previous prime is 225291533. The next prime is 225291581. The reversal of 225291571 is 175192522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225291571 - 2²³ = 216902963 is a prime.

It is not a weakly prime, because it can be changed into another prime (225291581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112645785 + 112645786.

It is an arithmetic number, because the mean of its divisors is an integer number (112645786).

Almost surely, 2^225291571 is an apocalyptic number.

225291571 is a deficient number, since it is larger than the sum of its proper divisors (1).

225291571 is an equidigital number, since it uses as much as digits as its factorization.

225291571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 34.

The square root of 225291571 is about 15009.7158867182. The cubic root of 225291571 is about 608.4828111483.

The spelling of 225291571 in words is "two hundred twenty-five million, two hundred ninety-one thousand, five hundred seventy-one".