825529 has 4 divisors (see below), whose sum is σ = 827776. Its totient is φ = 823284.

The previous prime is 825527. The next prime is 825533. The reversal of 825529 is 925528.

It is a happy number.

825529 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 825529 - 2¹ = 825527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 825529.

It is not an unprimeable number, because it can be changed into a prime (825527) 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, 429 + ... + 1354.

It is an arithmetic number, because the mean of its divisors is an integer number (206944).

2⁸²⁵⁵²⁹ is an apocalyptic number.

It is an amenable number.

825529 is a deficient number, since it is larger than the sum of its proper divisors (2247).

825529 is a wasteful number, since it uses less digits than its factorization.

825529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246.

The product of its digits is 7200, while the sum is 31.

The square root of 825529 is about 908.5862644791. The cubic root of 825529 is about 93.8089146726.

Subtracting 825529 from its reverse (925528), we obtain a palindrome (99999).

The spelling of 825529 in words is "eight hundred twenty-five thousand, five hundred twenty-nine".