225430169 has 2 divisors, whose sum is σ = 225430170. Its totient is φ = 225430168.

The previous prime is 225430129. The next prime is 225430181. The reversal of 225430169 is 961034522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225390169 + 40000 = 15013^2 + 200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225430169 is a prime.

It is a super-2 number, since 2×225430169² = 101637522190737122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (225430129) 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, 112715084 + 112715085.

It is an arithmetic number, because the mean of its divisors is an integer number (112715085).

Almost surely, 2^225430169 is an apocalyptic number.

It is an amenable number.

225430169 is a deficient number, since it is larger than the sum of its proper divisors (1).

225430169 is an equidigital number, since it uses as much as digits as its factorization.

225430169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 225430169 is about 15014.3321196782. The cubic root of 225430169 is about 608.6075638738.

It can be divided in two parts, 2254 and 30169, that added together give a palindrome (32423).

The spelling of 225430169 in words is "two hundred twenty-five million, four hundred thirty thousand, one hundred sixty-nine".