25422 is nontrivially palindromic in base 8.
25422 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.
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 25422.
25422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
225422 is an apocalyptic number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
25422 is a wasteful number, since it uses less digits than its factorization.
25422 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 247.
The square root of 25422 is about 159.4427797048. The cubic root of 25422 is about 29.4037849725.
Adding to 25422 its reverse (22452), we get a palindrome (47874).
The spelling of 25422 in words is "twenty-five thousand, four hundred twenty-two".