25044 has 12 divisors (see below), whose sum is σ = 58464. Its totient is φ = 8344.

The previous prime is 25037. The next prime is 25057. The reversal of 25044 is 44052.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

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 25044.

It is an unprimeable number.

25044 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 3 ways as a sum of consecutive naturals, for example, 1032 + ... + 1055.

It is an arithmetic number, because the mean of its divisors is an integer number (4872).

2²⁵⁰⁴⁴ is an apocalyptic number.

It is an amenable number.

25044 is an abundant number, since it is smaller than the sum of its proper divisors (33420).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29232).

25044 is a wasteful number, since it uses less digits than its factorization.

25044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094 (or 2092 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 25044 is about 158.2529620576. The cubic root of 25044 is about 29.2573215655.

Adding to 25044 its reverse (44052), we get a palindrome (69096).

The spelling of 25044 in words is "twenty-five thousand, forty-four".