225855172399 has 2 divisors, whose sum is σ = 225855172400. Its totient is φ = 225855172398.

The previous prime is 225855172379. The next prime is 225855172421. The reversal of 225855172399 is 993271558522.

225855172399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225855172399 - 2²¹ = 225853075247 is a prime.

It is a super-2 number, since 2×225855172399² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225855172379) 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, 112927586199 + 112927586200.

It is an arithmetic number, because the mean of its divisors is an integer number (112927586200).

Almost surely, 2^225855172399 is an apocalyptic number.

225855172399 is a deficient number, since it is larger than the sum of its proper divisors (1).

225855172399 is an equidigital number, since it uses as much as digits as its factorization.

225855172399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608000, while the sum is 58.

The spelling of 225855172399 in words is "two hundred twenty-five billion, eight hundred fifty-five million, one hundred seventy-two thousand, three hundred ninety-nine".