825503 has 12 divisors (see below), whose sum is σ = 1017792. Its totient is φ = 665280.

The previous prime is 825491. The next prime is 825509. The reversal of 825503 is 305528.

It is not a de Polignac number, because 825503 - 2⁶ = 825439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825509) 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 11 ways as a sum of consecutive naturals, for example, 338 + ... + 1328.

It is an arithmetic number, because the mean of its divisors is an integer number (84816).

2⁸²⁵⁵⁰³ is an apocalyptic number.

825503 is a deficient number, since it is larger than the sum of its proper divisors (192289).

825503 is a wasteful number, since it uses less digits than its factorization.

825503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022 (or 1015 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 825503 is about 908.5719564239. The cubic root of 825503 is about 93.8079298264.

The spelling of 825503 in words is "eight hundred twenty-five thousand, five hundred three".