225316 has 24 divisors (see below), whose sum is σ = 486080. Its totient is φ = 88992.

The previous prime is 225307. The next prime is 225341. The reversal of 225316 is 613522.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 225293 and 225302.

It is an unprimeable number.

225316 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55 + ... + 673.

2²²⁵³¹⁶ is an apocalyptic number.

225316 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243040).

225316 is an abundant number, since it is smaller than the sum of its proper divisors (260764).

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

225316 is a wasteful number, since it uses less digits than its factorization.

225316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 641 counting only the distinct ones).

The product of its digits is 360, while the sum is 19.

The square root of 225316 is about 474.6746254014. The cubic root of 225316 is about 60.8504803522.

Adding to 225316 its reverse (613522), we get a palindrome (838838).

The spelling of 225316 in words is "two hundred twenty-five thousand, three hundred sixteen".