825399 has 6 divisors (see below), whose sum is σ = 1192256. Its totient is φ = 550260.

The previous prime is 825397. The next prime is 825403. The reversal of 825399 is 993528.

825399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 825399 - 2¹ = 825397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45847 + ... + 45864.

2⁸²⁵³⁹⁹ is an apocalyptic number.

825399 is a deficient number, since it is larger than the sum of its proper divisors (366857).

825399 is a wasteful number, since it uses less digits than its factorization.

825399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91717 (or 91714 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 825399 is about 908.5147219501. The cubic root of 825399 is about 93.8039902346.

The spelling of 825399 in words is "eight hundred twenty-five thousand, three hundred ninety-nine".