825505 has 8 divisors (see below), whose sum is σ = 1000512. Its totient is φ = 653808.

The previous prime is 825491. The next prime is 825509. The reversal of 825505 is 505528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 825505 - 2¹¹ = 823457 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 825505.

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, 237 + ... + 1306.

It is an arithmetic number, because the mean of its divisors is an integer number (125064).

2⁸²⁵⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

825505 is a deficient number, since it is larger than the sum of its proper divisors (175007).

825505 is a wasteful number, since it uses less digits than its factorization.

825505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 825505 is about 908.5730570516. The cubic root of 825505 is about 93.8080055845.

The spelling of 825505 in words is "eight hundred twenty-five thousand, five hundred five".