225686000947 has 4 divisors (see below), whose sum is σ = 246202910136. Its totient is φ = 205169091760.

The previous prime is 225686000941. The next prime is 225686000987. The reversal of 225686000947 is 749000686522.

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

It is a cyclic number.

It is not a de Polignac number, because 225686000947 - 2¹⁹ = 225685476659 is a prime.

It is a Smith number, since the sum of its digits (49) 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 a self number, because there is not a number n which added to its sum of digits gives 225686000947.

It is not an unprimeable number, because it can be changed into a prime (225686000941) 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, 10258454578 + ... + 10258454599.

It is an arithmetic number, because the mean of its divisors is an integer number (61550727534).

Almost surely, 2^225686000947 is an apocalyptic number.

225686000947 is the 253933-rd centered heptagonal number.

225686000947 is a deficient number, since it is larger than the sum of its proper divisors (20516909189).

225686000947 is a wasteful number, since it uses less digits than its factorization.

225686000947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20516909188.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 225686000947 in words is "two hundred twenty-five billion, six hundred eighty-six million, nine hundred forty-seven", and thus it is an aban number.