225905503819 has 2 divisors, whose sum is σ = 225905503820. Its totient is φ = 225905503818.

The previous prime is 225905503787. The next prime is 225905503843. The reversal of 225905503819 is 918305509522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225905503819 - 2⁵ = 225905503787 is a prime.

It is a super-2 number, since 2×225905503819² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (225905503319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112952751909 + 112952751910.

It is an arithmetic number, because the mean of its divisors is an integer number (112952751910).

Almost surely, 2^225905503819 is an apocalyptic number.

225905503819 is a deficient number, since it is larger than the sum of its proper divisors (1).

225905503819 is an equidigital number, since it uses as much as digits as its factorization.

225905503819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 225905503819 in words is "two hundred twenty-five billion, nine hundred five million, five hundred three thousand, eight hundred nineteen".