225686 has 4 divisors (see below), whose sum is σ = 338532. Its totient is φ = 112842.

The previous prime is 225683. The next prime is 225689. The reversal of 225686 is 686522.

225686 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 686522 = 2 ⋅343261.

It is an interprime number because it is at equal distance from previous prime (225683) and next prime (225689).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56420 + ... + 56423.

It is an arithmetic number, because the mean of its divisors is an integer number (84633).

2²²⁵⁶⁸⁶ is an apocalyptic number.

225686 is a deficient number, since it is larger than the sum of its proper divisors (112846).

225686 is a wasteful number, since it uses less digits than its factorization.

225686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112845.

The product of its digits is 5760, while the sum is 29.

The square root of 225686 is about 475.0642061869. The cubic root of 225686 is about 60.8837704350.

The spelling of 225686 in words is "two hundred twenty-five thousand, six hundred eighty-six".