825031 has 4 divisors (see below), whose sum is σ = 828432. Its totient is φ = 821632.

The previous prime is 825029. The next prime is 825047. The reversal of 825031 is 130528.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 825031 - 2¹ = 825029 is a prime.

It is a super-2 number, since 2×825031² = 1361352301922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1306 + ... + 1831.

It is an arithmetic number, because the mean of its divisors is an integer number (207108).

2⁸²⁵⁰³¹ is an apocalyptic number.

825031 is a deficient number, since it is larger than the sum of its proper divisors (3401).

825031 is a wasteful number, since it uses less digits than its factorization.

825031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 825031 is about 908.3121710073. The cubic root of 825031 is about 93.7900474829.

Adding to 825031 its reverse (130528), we get a palindrome (955559).

It can be divided in two parts, 8250 and 31, that added together give a square (8281 = 91²).

The spelling of 825031 in words is "eight hundred twenty-five thousand, thirty-one".