225425794217 has 8 divisors (see below), whose sum is σ = 242770133256. Its totient is φ = 208082011392.

The previous prime is 225425794213. The next prime is 225425794249. The reversal of 225425794217 is 712497524522.

225425794217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9887518096 + 215538276121 = 99436^2 + 464261^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 225425794217 - 2² = 225425794213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225425794211) 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 in 7 ways as a sum of consecutive naturals, for example, 1135313 + ... + 1319009.

It is an arithmetic number, because the mean of its divisors is an integer number (30346266657).

Almost surely, 2^225425794217 is an apocalyptic number.

It is an amenable number.

225425794217 is a deficient number, since it is larger than the sum of its proper divisors (17344339039).

225425794217 is a wasteful number, since it uses less digits than its factorization.

225425794217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278107.

The product of its digits is 2822400, while the sum is 50.

The spelling of 225425794217 in words is "two hundred twenty-five billion, four hundred twenty-five million, seven hundred ninety-four thousand, two hundred seventeen".