25441 has 8 divisors (see below), whose sum is σ = 29120. Its totient is φ = 22032.

The previous prime is 25439. The next prime is 25447. The reversal of 25441 is 14452.

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

It is a cyclic number.

It is not a de Polignac number, because 25441 - 2¹ = 25439 is a prime.

It is the 160-th Hogben number.

25441 is a lucky number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (25447) by changing a digit.

It is a nontrivial repunit in base 159.

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 7 ways as a sum of consecutive naturals, for example, 196 + ... + 298.

It is an arithmetic number, because the mean of its divisors is an integer number (3640).

2²⁵⁴⁴¹ is an apocalyptic number.

It is an amenable number.

25441 is a deficient number, since it is larger than the sum of its proper divisors (3679).

25441 is a wasteful number, since it uses less digits than its factorization.

25441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135.

The product of its digits is 160, while the sum is 16.

The square root of 25441 is about 159.5023510799. The cubic root of 25441 is about 29.4111084559.

Subtracting from 25441 its sum of digits (16), we obtain a triangular number (25425 = T₂₂₅).

Subtracting from 25441 its product of digits (160), we obtain a square (25281 = 159²).

Adding to 25441 its reverse (14452), we get a palindrome (39893).

It can be divided in two parts, 25 and 441, that multiplied together give a square (11025 = 105²).

The spelling of 25441 in words is "twenty-five thousand, four hundred forty-one".