825863165 has 4 divisors (see below), whose sum is σ = 991035804. Its totient is φ = 660690528.

The previous prime is 825863147. The next prime is 825863183. The reversal of 825863165 is 561368528.

825863165 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (825863147) and next prime (825863183).

It can be written as a sum of positive squares in 2 ways, for example, as 85914361 + 739948804 = 9269^2 + 27202^2 .

It is a cyclic number.

It is not a de Polignac number, because 825863165 - 2¹⁴ = 825846781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82586312 + ... + 82586321.

It is an arithmetic number, because the mean of its divisors is an integer number (247758951).

Almost surely, 2^825863165 is an apocalyptic number.

It is an amenable number.

825863165 is a deficient number, since it is larger than the sum of its proper divisors (165172639).

825863165 is a wasteful number, since it uses less digits than its factorization.

825863165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165172638.

The product of its digits is 345600, while the sum is 44.

The square root of 825863165 is about 28737.8350785163. The cubic root of 825863165 is about 938.2157056848.

The spelling of 825863165 in words is "eight hundred twenty-five million, eight hundred sixty-three thousand, one hundred sixty-five".