226725908639 has 4 divisors (see below), whose sum is σ = 226745768256. Its totient is φ = 226706049024.

The previous prime is 226725908611. The next prime is 226725908687. The reversal of 226725908639 is 936809527622.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226725908639 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 (226725908699) 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, 9912674 + ... + 9935519.

It is an arithmetic number, because the mean of its divisors is an integer number (56686442064).

Almost surely, 2^226725908639 is an apocalyptic number.

226725908639 is a deficient number, since it is larger than the sum of its proper divisors (19859617).

226725908639 is a wasteful number, since it uses less digits than its factorization.

226725908639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19859616.

The product of its (nonzero) digits is 19595520, while the sum is 59.

The spelling of 226725908639 in words is "two hundred twenty-six billion, seven hundred twenty-five million, nine hundred eight thousand, six hundred thirty-nine".