225544439 has 2 divisors, whose sum is σ = 225544440. Its totient is φ = 225544438.

The previous prime is 225544427. The next prime is 225544453. The reversal of 225544439 is 934445522.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225544439 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225544139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112772219 + 112772220.

It is an arithmetic number, because the mean of its divisors is an integer number (112772220).

Almost surely, 2^225544439 is an apocalyptic number.

225544439 is a deficient number, since it is larger than the sum of its proper divisors (1).

225544439 is an equidigital number, since it uses as much as digits as its factorization.

225544439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 38.

The square root of 225544439 is about 15018.1370016391. The cubic root of 225544439 is about 608.7103803973.

The spelling of 225544439 in words is "two hundred twenty-five million, five hundred forty-four thousand, four hundred thirty-nine".