825499 has 6 divisors (see below), whose sum is σ = 853980. Its totient is φ = 797940.

The previous prime is 825491. The next prime is 825509. The reversal of 825499 is 994528.

825499 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 825499 - 2³ = 825491 is a prime.

It is a Duffinian number.

825499 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (825491) 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, 532 + ... + 1390.

It is an arithmetic number, because the mean of its divisors is an integer number (142330).

2⁸²⁵⁴⁹⁹ is an apocalyptic number.

825499 is a deficient number, since it is larger than the sum of its proper divisors (28481).

825499 is an equidigital number, since it uses as much as digits as its factorization.

825499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921 (or 890 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 825499 is about 908.5697551647. The cubic root of 825499 is about 93.8077783097.

The spelling of 825499 in words is "eight hundred twenty-five thousand, four hundred ninety-nine".