225707329 has 2 divisors, whose sum is σ = 225707330. Its totient is φ = 225707328.

The previous prime is 225707323. The next prime is 225707369. The reversal of 225707329 is 923707522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225600400 + 106929 = 15020^2 + 327^2 .

It is a cyclic number.

It is not a de Polignac number, because 225707329 - 2⁷ = 225707201 is a prime.

It is not a weakly prime, because it can be changed into another prime (225707323) 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, 112853664 + 112853665.

It is an arithmetic number, because the mean of its divisors is an integer number (112853665).

Almost surely, 2^225707329 is an apocalyptic number.

It is an amenable number.

225707329 is a deficient number, since it is larger than the sum of its proper divisors (1).

225707329 is an equidigital number, since it uses as much as digits as its factorization.

225707329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 225707329 is about 15023.5591322429. The cubic root of 225707329 is about 608.8568836381.

The spelling of 225707329 in words is "two hundred twenty-five million, seven hundred seven thousand, three hundred twenty-nine".