225442627217 has 4 divisors (see below), whose sum is σ = 225443792676. Its totient is φ = 225441461760.

The previous prime is 225442627169. The next prime is 225442627247. The reversal of 225442627217 is 712726244522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 161546921041 + 63895706176 = 401929^2 + 252776^2 .

It is a cyclic number.

It is not a de Polignac number, because 225442627217 - 2¹⁰ = 225442626193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225442627247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215384 + ... + 705177.

It is an arithmetic number, because the mean of its divisors is an integer number (56360948169).

Almost surely, 2^225442627217 is an apocalyptic number.

It is an amenable number.

225442627217 is a deficient number, since it is larger than the sum of its proper divisors (1165459).

225442627217 is an equidigital number, since it uses as much as digits as its factorization.

225442627217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165458.

The product of its digits is 752640, while the sum is 44.

The spelling of 225442627217 in words is "two hundred twenty-five billion, four hundred forty-two million, six hundred twenty-seven thousand, two hundred seventeen".