225167729 has 2 divisors, whose sum is σ = 225167730. Its totient is φ = 225167728.

The previous prime is 225167717. The next prime is 225167743. The reversal of 225167729 is 927761522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222010000 + 3157729 = 14900^2 + 1777^2 .

It is a cyclic number.

It is not a de Polignac number, because 225167729 - 2⁸ = 225167473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225167029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112583864 + 112583865.

It is an arithmetic number, because the mean of its divisors is an integer number (112583865).

Almost surely, 2^225167729 is an apocalyptic number.

It is an amenable number.

225167729 is a deficient number, since it is larger than the sum of its proper divisors (1).

225167729 is an equidigital number, since it uses as much as digits as its factorization.

225167729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 225167729 is about 15005.5899250912. The cubic root of 225167729 is about 608.3712970782.

The spelling of 225167729 in words is "two hundred twenty-five million, one hundred sixty-seven thousand, seven hundred twenty-nine".