225855172398 has 8 divisors (see below), whose sum is σ = 451710344808. Its totient is φ = 75285057464.

The previous prime is 225855172379. The next prime is 225855172399. The reversal of 225855172398 is 893271558522.

It is a sphenic number, since it is the product of 3 distinct primes.

225855172398 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225855172399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18821264361 + ... + 18821264372.

It is an arithmetic number, because the mean of its divisors is an integer number (56463793101).

Almost surely, 2^225855172398 is an apocalyptic number.

225855172398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225855172398 is a wasteful number, since it uses less digits than its factorization.

225855172398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37642528738.

The product of its digits is 12096000, while the sum is 57.

The spelling of 225855172398 in words is "two hundred twenty-five billion, eight hundred fifty-five million, one hundred seventy-two thousand, three hundred ninety-eight".