225605273 has 2 divisors, whose sum is σ = 225605274. Its totient is φ = 225605272.

The previous prime is 225605251. The next prime is 225605287. The reversal of 225605273 is 372506522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194658304 + 30946969 = 13952^2 + 5563^2 .

It is a cyclic number.

It is not a de Polignac number, because 225605273 - 2²⁰ = 224556697 is a prime.

It is not a weakly prime, because it can be changed into another prime (225605473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112802636 + 112802637.

It is an arithmetic number, because the mean of its divisors is an integer number (112802637).

Almost surely, 2^225605273 is an apocalyptic number.

It is an amenable number.

225605273 is a deficient number, since it is larger than the sum of its proper divisors (1).

225605273 is an equidigital number, since it uses as much as digits as its factorization.

225605273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 225605273 is about 15020.1622161680. The cubic root of 225605273 is about 608.7651027374.

The spelling of 225605273 in words is "two hundred twenty-five million, six hundred five thousand, two hundred seventy-three".