825441 has 4 divisors (see below), whose sum is σ = 1100592. Its totient is φ = 550292.

The previous prime is 825439. The next prime is 825443. The reversal of 825441 is 144528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (825439) and next prime (825443).

It is a cyclic number.

It is not a de Polignac number, because 825441 - 2¹ = 825439 is a prime.

It is a D-number.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 825441.

It is not an unprimeable number, because it can be changed into a prime (825443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137571 + ... + 137576.

It is an arithmetic number, because the mean of its divisors is an integer number (275148).

2⁸²⁵⁴⁴¹ is an apocalyptic number.

It is an amenable number.

825441 is a deficient number, since it is larger than the sum of its proper divisors (275151).

825441 is a wasteful number, since it uses less digits than its factorization.

825441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275150.

The product of its digits is 1280, while the sum is 24.

The square root of 825441 is about 908.5378363062. The cubic root of 825441 is about 93.8055812634.

Adding to 825441 its reverse (144528), we get a palindrome (969969).

The spelling of 825441 in words is "eight hundred twenty-five thousand, four hundred forty-one".