225838 has 4 divisors (see below), whose sum is σ = 338760. Its totient is φ = 112918.

The previous prime is 225829. The next prime is 225839. The reversal of 225838 is 838522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 838522 = 2 ⋅419261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56458 + ... + 56461.

It is an arithmetic number, because the mean of its divisors is an integer number (84690).

2²²⁵⁸³⁸ is an apocalyptic number.

225838 is a deficient number, since it is larger than the sum of its proper divisors (112922).

225838 is a wasteful number, since it uses less digits than its factorization.

225838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112921.

The product of its digits is 3840, while the sum is 28.

The square root of 225838 is about 475.2241576351. The cubic root of 225838 is about 60.8974358171.

The spelling of 225838 in words is "two hundred twenty-five thousand, eight hundred thirty-eight".