225405559 has 2 divisors, whose sum is σ = 225405560. Its totient is φ = 225405558.

The previous prime is 225405541. The next prime is 225405581. The reversal of 225405559 is 955504522.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225405559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225405599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112702779 + 112702780.

It is an arithmetic number, because the mean of its divisors is an integer number (112702780).

Almost surely, 2^225405559 is an apocalyptic number.

225405559 is a deficient number, since it is larger than the sum of its proper divisors (1).

225405559 is an equidigital number, since it uses as much as digits as its factorization.

225405559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 225405559 is about 15013.5125470358. The cubic root of 225405559 is about 608.5854160290.

The spelling of 225405559 in words is "two hundred twenty-five million, four hundred five thousand, five hundred fifty-nine".