825939 has 6 divisors (see below), whose sum is σ = 1193036. Its totient is φ = 550620.

The previous prime is 825919. The next prime is 825947. The reversal of 825939 is 939528.

825939 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 825939 - 2¹⁷ = 694867 is a prime.

It is a Duffinian number.

825939 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (825919) 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, 45877 + ... + 45894.

2⁸²⁵⁹³⁹ is an apocalyptic number.

825939 is a deficient number, since it is larger than the sum of its proper divisors (367097).

825939 is a wasteful number, since it uses less digits than its factorization.

825939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91777 (or 91774 counting only the distinct ones).

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

The square root of 825939 is about 908.8118617184. The cubic root of 825939 is about 93.8244422068.

It can be divided in two parts, 825 and 939, that added together give a square (1764 = 42²).

The spelling of 825939 in words is "eight hundred twenty-five thousand, nine hundred thirty-nine".