225544427 has 2 divisors, whose sum is σ = 225544428. Its totient is φ = 225544426.

The previous prime is 225544387. The next prime is 225544439. The reversal of 225544427 is 724445522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225544427 - 2⁸ = 225544171 is a prime.

It is not a weakly prime, because it can be changed into another prime (225544477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112772213 + 112772214.

It is an arithmetic number, because the mean of its divisors is an integer number (112772214).

Almost surely, 2^225544427 is an apocalyptic number.

225544427 is a deficient number, since it is larger than the sum of its proper divisors (1).

225544427 is an equidigital number, since it uses as much as digits as its factorization.

225544427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 89600, while the sum is 35.

The square root of 225544427 is about 15018.1366021221. The cubic root of 225544427 is about 608.7103696019.

Adding to 225544427 its reverse (724445522), we get a palindrome (949989949).

The spelling of 225544427 in words is "two hundred twenty-five million, five hundred forty-four thousand, four hundred twenty-seven".