825604 has 12 divisors (see below), whose sum is σ = 1556044. Its totient is φ = 381024.

The previous prime is 825593. The next prime is 825611. The reversal of 825604 is 406528.

It can be written as a sum of positive squares in 2 ways, for example, as 565504 + 260100 = 752^2 + 510^2 .

It is a zygodrome in base 12.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7887 + ... + 7990.

2⁸²⁵⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

825604 is a deficient number, since it is larger than the sum of its proper divisors (730440).

825604 is a wasteful number, since it uses less digits than its factorization.

825604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15894 (or 15892 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 825604 is about 908.6275364526. The cubic root of 825604 is about 93.8117554594.

The spelling of 825604 in words is "eight hundred twenty-five thousand, six hundred four".