It is an Ulam number.
It is a congruent number.
225340 is an apocalyptic number.
25340 is a gapful number since it is divisible by the number (20) 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 25340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30576).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
25340 is a wasteful number, since it uses less digits than its factorization.
25340 is an odious number, because the sum of its binary digits is odd.
The square root of 25340 is about 159.1854264686. The cubic root of 25340 is about 29.3721364343.
Adding to 25340 its reverse (4352), we get a palindrome (29692).
The spelling of 25340 in words is "twenty-five thousand, three hundred forty".