225294161 has 2 divisors, whose sum is σ = 225294162. Its totient is φ = 225294160.

The previous prime is 225294107. The next prime is 225294187. The reversal of 225294161 is 161492522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129254161 + 96040000 = 11369^2 + 9800^2 .

It is a cyclic number.

It is not a de Polignac number, because 225294161 - 2¹⁴ = 225277777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225294101) 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, 112647080 + 112647081.

It is an arithmetic number, because the mean of its divisors is an integer number (112647081).

Almost surely, 2^225294161 is an apocalyptic number.

It is an amenable number.

225294161 is a deficient number, since it is larger than the sum of its proper divisors (1).

225294161 is an equidigital number, since it uses as much as digits as its factorization.

225294161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 225294161 is about 15009.8021639194. The cubic root of 225294161 is about 608.4851428888.

The spelling of 225294161 in words is "two hundred twenty-five million, two hundred ninety-four thousand, one hundred sixty-one".