226256217725321 has 6 divisors (see below), whose sum is σ = 263196008374410. Its totient is φ = 193933900907376.

The previous prime is 226256217725249. The next prime is 226256217725383. The reversal of 226256217725321 is 123527712652622.

It can be written as a sum of positive squares in only one way, i.e., 172030505281600 + 54225712443721 = 13116040^2 + 7363811^2 .

It is a de Polignac number, because none of the positive numbers 2^k-226256217725321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (226256217724321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2308736915516 + ... + 2308736915613.

It is an arithmetic number, because the mean of its divisors is an integer number (43866001395735).

Almost surely, 2^{226256217725321} is an apocalyptic number.

It is an amenable number.

226256217725321 is a deficient number, since it is larger than the sum of its proper divisors (36939790649089).

226256217725321 is an equidigital number, since it uses as much as digits as its factorization.

226256217725321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4617473831143 (or 4617473831136 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 53.

The spelling of 226256217725321 in words is "two hundred twenty-six trillion, two hundred fifty-six billion, two hundred seventeen million, seven hundred twenty-five thousand, three hundred twenty-one".