225686807 has 4 divisors (see below), whose sum is σ = 237565080. Its totient is φ = 213808536.

The previous prime is 225686803. The next prime is 225686821. The reversal of 225686807 is 708686522.

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 225686807 - 2² = 225686803 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 (225686803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5939108 + ... + 5939145.

It is an arithmetic number, because the mean of its divisors is an integer number (59391270).

Almost surely, 2^225686807 is an apocalyptic number.

225686807 is a deficient number, since it is larger than the sum of its proper divisors (11878273).

225686807 is a wasteful number, since it uses less digits than its factorization.

225686807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11878272.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 225686807 is about 15022.8761227669. The cubic root of 225686807 is about 608.8384300361.

The spelling of 225686807 in words is "two hundred twenty-five million, six hundred eighty-six thousand, eight hundred seven".