825506 has 16 divisors (see below), whose sum is σ = 1365120. Its totient is φ = 371280.

The previous prime is 825491. The next prime is 825509. The reversal of 825506 is 605528.

It is not an unprimeable number, because it can be changed into a prime (825509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3335 + ... + 3573.

It is an arithmetic number, because the mean of its divisors is an integer number (85320).

2⁸²⁵⁵⁰⁶ is an apocalyptic number.

825506 is a deficient number, since it is larger than the sum of its proper divisors (539614).

825506 is a wasteful number, since it uses less digits than its factorization.

825506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 825506 is about 908.5736073649. The cubic root of 825506 is about 93.8080434635.

It can be divided in two parts, 825 and 506, that added together give a palindrome (1331).

The spelling of 825506 in words is "eight hundred twenty-five thousand, five hundred six".