825899 has 4 divisors (see below), whose sum is σ = 841536. Its totient is φ = 810264.

The previous prime is 825889. The next prime is 825919. The reversal of 825899 is 998528.

It is a happy number.

825899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 825899 - 2⁴ = 825883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825829) 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, 7739 + ... + 7844.

It is an arithmetic number, because the mean of its divisors is an integer number (210384).

2⁸²⁵⁸⁹⁹ is an apocalyptic number.

825899 is a deficient number, since it is larger than the sum of its proper divisors (15637).

825899 is a wasteful number, since it uses less digits than its factorization.

825899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15636.

The product of its digits is 51840, while the sum is 41.

The square root of 825899 is about 908.7898546969. The cubic root of 825899 is about 93.8229275517.

The spelling of 825899 in words is "eight hundred twenty-five thousand, eight hundred ninety-nine".