225655379 has 2 divisors, whose sum is σ = 225655380. Its totient is φ = 225655378.

The previous prime is 225655361. The next prime is 225655393. The reversal of 225655379 is 973556522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225655379 - 2⁸ = 225655123 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (225655279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112827689 + 112827690.

It is an arithmetic number, because the mean of its divisors is an integer number (112827690).

Almost surely, 2^225655379 is an apocalyptic number.

225655379 is a deficient number, since it is larger than the sum of its proper divisors (1).

225655379 is an equidigital number, since it uses as much as digits as its factorization.

225655379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 567000, while the sum is 44.

The square root of 225655379 is about 15021.8300815846. The cubic root of 225655379 is about 608.8101674736.

The spelling of 225655379 in words is "two hundred twenty-five million, six hundred fifty-five thousand, three hundred seventy-nine".