225686647 has 8 divisors (see below), whose sum is σ = 230688000. Its totient is φ = 220739064.

The previous prime is 225686633. The next prime is 225686653. The reversal of 225686647 is 746686522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225686647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225686597 and 225686606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225686627) 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, 4897 + ... + 21802.

It is an arithmetic number, because the mean of its divisors is an integer number (28836000).

Almost surely, 2^225686647 is an apocalyptic number.

225686647 is a deficient number, since it is larger than the sum of its proper divisors (5001353).

225686647 is a wasteful number, since it uses less digits than its factorization.

225686647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26885.

The product of its digits is 967680, while the sum is 46.

The square root of 225686647 is about 15022.8707975540. The cubic root of 225686647 is about 608.8382861580.

The spelling of 225686647 in words is "two hundred twenty-five million, six hundred eighty-six thousand, six hundred forty-seven".