225909559 has 2 divisors, whose sum is σ = 225909560. Its totient is φ = 225909558.

The previous prime is 225909547. The next prime is 225909569. The reversal of 225909559 is 955909522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225909559 is a prime.

It is a super-5 number, since 5×225909559⁵ (a number of 43 digits) contains 55555 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225909529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112954779 + 112954780.

It is an arithmetic number, because the mean of its divisors is an integer number (112954780).

Almost surely, 2^225909559 is an apocalyptic number.

225909559 is a deficient number, since it is larger than the sum of its proper divisors (1).

225909559 is an equidigital number, since it uses as much as digits as its factorization.

225909559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 364500, while the sum is 46.

The square root of 225909559 is about 15030.2880544586. The cubic root of 225909559 is about 609.0386712249.

The spelling of 225909559 in words is "two hundred twenty-five million, nine hundred nine thousand, five hundred fifty-nine".