825497 has 4 divisors (see below), whose sum is σ = 827316. Its totient is φ = 823680.

The previous prime is 825491. The next prime is 825509. The reversal of 825497 is 794528.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 87616 + 737881 = 296^2 + 859^2 .

It is a cyclic number.

It is not a de Polignac number, because 825497 - 2⁸ = 825241 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 825497.

It is not an unprimeable number, because it can be changed into a prime (825491) 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, 413 + ... + 1349.

It is an arithmetic number, because the mean of its divisors is an integer number (206829).

2⁸²⁵⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

825497 is a deficient number, since it is larger than the sum of its proper divisors (1819).

825497 is an equidigital number, since it uses as much as digits as its factorization.

825497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818.

The product of its digits is 20160, while the sum is 35.

The square root of 825497 is about 908.5686545331. The cubic root of 825497 is about 93.8077025512.

The spelling of 825497 in words is "eight hundred twenty-five thousand, four hundred ninety-seven".