25554 has 8 divisors (see below), whose sum is σ = 51120. Its totient is φ = 8516.

The previous prime is 25541. The next prime is 25561. The reversal of 25554 is 45552.

25554 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

25554 is an admirable number.

It is a Curzon number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 25554.

It is an unprimeable number.

25554 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2124 + ... + 2135.

It is an arithmetic number, because the mean of its divisors is an integer number (6390).

2²⁵⁵⁵⁴ is an apocalyptic number.

25554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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 (25560).

25554 is a wasteful number, since it uses less digits than its factorization.

25554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4264.

The product of its digits is 1000, while the sum is 21.

The square root of 25554 is about 159.8561853667. The cubic root of 25554 is about 29.4545887544.

The spelling of 25554 in words is "twenty-five thousand, five hundred fifty-four".