225945611 has 2 divisors, whose sum is σ = 225945612. Its totient is φ = 225945610.

The previous prime is 225945571. The next prime is 225945613. The reversal of 225945611 is 116549522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225945611 - 2¹⁸ = 225683467 is a prime.

Together with 225945613, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225945613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112972805 + 112972806.

It is an arithmetic number, because the mean of its divisors is an integer number (112972806).

Almost surely, 2^225945611 is an apocalyptic number.

225945611 is a deficient number, since it is larger than the sum of its proper divisors (1).

225945611 is an equidigital number, since it uses as much as digits as its factorization.

225945611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 35.

The square root of 225945611 is about 15031.4873182929. The cubic root of 225945611 is about 609.0710675142.

The spelling of 225945611 in words is "two hundred twenty-five million, nine hundred forty-five thousand, six hundred eleven".