225723241217 has 4 divisors (see below), whose sum is σ = 231823869396. Its totient is φ = 219622613040.

The previous prime is 225723241199. The next prime is 225723241259. The reversal of 225723241217 is 712142327522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89352568561 + 136370672656 = 298919^2 + 369284^2 .

It is a cyclic number.

It is not a de Polignac number, because 225723241217 - 2¹² = 225723237121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225723241297) 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, 3050314034 + ... + 3050314107.

It is an arithmetic number, because the mean of its divisors is an integer number (57955967349).

Almost surely, 2^225723241217 is an apocalyptic number.

It is an amenable number.

225723241217 is a deficient number, since it is larger than the sum of its proper divisors (6100628179).

225723241217 is an equidigital number, since it uses as much as digits as its factorization.

225723241217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6100628178.

The product of its digits is 94080, while the sum is 38.

Adding to 225723241217 its reverse (712142327522), we get a palindrome (937865568739).

The spelling of 225723241217 in words is "two hundred twenty-five billion, seven hundred twenty-three million, two hundred forty-one thousand, two hundred seventeen".