25340 has 24 divisors (see below), whose sum is σ = 61152. Its totient is φ = 8640.

The previous prime is 25339. The next prime is 25343. The reversal of 25340 is 4352.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50 + ... + 230.

It is an arithmetic number, because the mean of its divisors is an integer number (2548).

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).

25340 is an abundant number, since it is smaller than the sum of its proper divisors (35812).

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 sum of its prime factors is 197 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

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".