225611843 has 2 divisors, whose sum is σ = 225611844. Its totient is φ = 225611842.

The previous prime is 225611839. The next prime is 225611849. The reversal of 225611843 is 348116522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225611843 - 2² = 225611839 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (225611849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112805921 + 112805922.

It is an arithmetic number, because the mean of its divisors is an integer number (112805922).

Almost surely, 2^225611843 is an apocalyptic number.

225611843 is a deficient number, since it is larger than the sum of its proper divisors (1).

225611843 is an equidigital number, since it uses as much as digits as its factorization.

225611843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 32.

The square root of 225611843 is about 15020.3809206025. The cubic root of 225611843 is about 608.7710120968.

The spelling of 225611843 in words is "two hundred twenty-five million, six hundred eleven thousand, eight hundred forty-three".