225878 has 4 divisors (see below), whose sum is σ = 338820. Its totient is φ = 112938.

The previous prime is 225871. The next prime is 225889. The reversal of 225878 is 878522.

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

It is a nialpdrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 225878.

It is not an unprimeable number, because it can be changed into a prime (225871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56468 + ... + 56471.

It is an arithmetic number, because the mean of its divisors is an integer number (84705).

2²²⁵⁸⁷⁸ is an apocalyptic number.

225878 is a deficient number, since it is larger than the sum of its proper divisors (112942).

225878 is a wasteful number, since it uses less digits than its factorization.

225878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112941.

The product of its digits is 8960, while the sum is 32.

The square root of 225878 is about 475.2662411744. The cubic root of 225878 is about 60.9010309512.

The spelling of 225878 in words is "two hundred twenty-five thousand, eight hundred seventy-eight".