226518385 has 4 divisors (see below), whose sum is σ = 271822068. Its totient is φ = 181214704.

The previous prime is 226518379. The next prime is 226518389. The reversal of 226518385 is 583815622.

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 107184609 + 119333776 = 10353^2 + 10924^2 .

It is a cyclic number.

It is not a de Polignac number, because 226518385 - 2¹¹ = 226516337 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226518389) 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, 22651834 + ... + 22651843.

It is an arithmetic number, because the mean of its divisors is an integer number (67955517).

Almost surely, 2^226518385 is an apocalyptic number.

It is an amenable number.

226518385 is a deficient number, since it is larger than the sum of its proper divisors (45303683).

226518385 is an equidigital number, since it uses as much as digits as its factorization.

226518385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45303682.

The product of its digits is 115200, while the sum is 40.

The square root of 226518385 is about 15050.5277316113. The cubic root of 226518385 is about 609.5852999687.

The spelling of 226518385 in words is "two hundred twenty-six million, five hundred eighteen thousand, three hundred eighty-five".