225443899 has 2 divisors, whose sum is σ = 225443900. Its totient is φ = 225443898.

The previous prime is 225443893. The next prime is 225443917. The reversal of 225443899 is 998344522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225443899 - 2¹⁷ = 225312827 is a prime.

It is not a weakly prime, because it can be changed into another prime (225443893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112721949 + 112721950.

It is an arithmetic number, because the mean of its divisors is an integer number (112721950).

Almost surely, 2^225443899 is an apocalyptic number.

225443899 is a deficient number, since it is larger than the sum of its proper divisors (1).

225443899 is an equidigital number, since it uses as much as digits as its factorization.

225443899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 46.

The square root of 225443899 is about 15014.7893425116. The cubic root of 225443899 is about 608.6199195289.

The spelling of 225443899 in words is "two hundred twenty-five million, four hundred forty-three thousand, eight hundred ninety-nine".