225678 has 16 divisors (see below), whose sum is σ = 467280. Its totient is φ = 72576.

The previous prime is 225671. The next prime is 225683. The reversal of 225678 is 876522.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225671) 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, 475 + ... + 822.

It is an arithmetic number, because the mean of its divisors is an integer number (29205).

2²²⁵⁶⁷⁸ is an apocalyptic number.

225678 is an abundant number, since it is smaller than the sum of its proper divisors (241602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225678 is a wasteful number, since it uses less digits than its factorization.

225678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331.

The product of its digits is 6720, while the sum is 30.

The square root of 225678 is about 475.0557861978. The cubic root of 225678 is about 60.8830510344.

It can be divided in two parts, 225 and 678, that added together give a triangular number (903 = T₄₂).

The spelling of 225678 in words is "two hundred twenty-five thousand, six hundred seventy-eight".