225611 has 2 divisors, whose sum is σ = 225612. Its totient is φ = 225610.

The previous prime is 225601. The next prime is 225613. The reversal of 225611 is 116522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225611 - 2¹⁴ = 209227 is a prime.

Together with 225613, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225611.

It is not a weakly prime, because it can be changed into another prime (225613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112805 + 112806.

It is an arithmetic number, because the mean of its divisors is an integer number (112806).

2²²⁵⁶¹¹ is an apocalyptic number.

225611 is a deficient number, since it is larger than the sum of its proper divisors (1).

225611 is an equidigital number, since it uses as much as digits as its factorization.

225611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 17.

The square root of 225611 is about 474.9852629293. The cubic root of 225611 is about 60.8770253870.

The spelling of 225611 in words is "two hundred twenty-five thousand, six hundred eleven".