225440329 has 2 divisors, whose sum is σ = 225440330. Its totient is φ = 225440328.

The previous prime is 225440321. The next prime is 225440351. The reversal of 225440329 is 923044522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160073104 + 65367225 = 12652^2 + 8085^2 .

It is a cyclic number.

It is not a de Polignac number, because 225440329 - 2³ = 225440321 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225440329.

It is not a weakly prime, because it can be changed into another prime (225440321) 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, 112720164 + 112720165.

It is an arithmetic number, because the mean of its divisors is an integer number (112720165).

Almost surely, 2^225440329 is an apocalyptic number.

It is an amenable number.

225440329 is a deficient number, since it is larger than the sum of its proper divisors (1).

225440329 is an equidigital number, since it uses as much as digits as its factorization.

225440329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 225440329 is about 15014.6704592542. The cubic root of 225440329 is about 608.6167069268.

The spelling of 225440329 in words is "two hundred twenty-five million, four hundred forty thousand, three hundred twenty-nine".