825449 has 4 divisors (see below), whose sum is σ = 828036. Its totient is φ = 822864.

The previous prime is 825443. The next prime is 825467. The reversal of 825449 is 944528.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 692224 + 133225 = 832^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 825449 - 2⁸ = 825193 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

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, 734 + ... + 1479.

It is an arithmetic number, because the mean of its divisors is an integer number (207009).

2⁸²⁵⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

825449 is a deficient number, since it is larger than the sum of its proper divisors (2587).

825449 is a wasteful number, since it uses less digits than its factorization.

825449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586.

The product of its digits is 11520, while the sum is 32.

The square root of 825449 is about 908.5422389741. The cubic root of 825449 is about 93.8058843104.

The spelling of 825449 in words is "eight hundred twenty-five thousand, four hundred forty-nine".