225636648445 has 8 divisors (see below), whose sum is σ = 291591976536. Its totient is φ = 166623986496.

The previous prime is 225636648443. The next prime is 225636648467. The reversal of 225636648445 is 544846636522.

It can be written as a sum of positive squares in 4 ways, for example, as 16698066841 + 208938581604 = 129221^2 + 457098^2 .

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 225636648445 - 2¹ = 225636648443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225636648443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1735666462 + ... + 1735666591.

It is an arithmetic number, because the mean of its divisors is an integer number (36448997067).

Almost surely, 2^225636648445 is an apocalyptic number.

It is an amenable number.

225636648445 is a deficient number, since it is larger than the sum of its proper divisors (65955328091).

225636648445 is a wasteful number, since it uses less digits than its factorization.

225636648445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471333071.

The product of its digits is 33177600, while the sum is 55.

The spelling of 225636648445 in words is "two hundred twenty-five billion, six hundred thirty-six million, six hundred forty-eight thousand, four hundred forty-five".