825781043 has 4 divisors (see below), whose sum is σ = 828762480. Its totient is φ = 822799608.

The previous prime is 825781039. The next prime is 825781067. The reversal of 825781043 is 340187528.

825781043 is digitally balanced in base 2, 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 a cyclic number.

It is not a de Polignac number, because 825781043 - 2² = 825781039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 825780988 and 825781006.

It is not an unprimeable number, because it can be changed into a prime (825781013) 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, 1490303 + ... + 1490856.

It is an arithmetic number, because the mean of its divisors is an integer number (207190620).

Almost surely, 2^825781043 is an apocalyptic number.

825781043 is a deficient number, since it is larger than the sum of its proper divisors (2981437).

825781043 is a wasteful number, since it uses less digits than its factorization.

825781043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981436.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 825781043 is about 28736.4062297289. The cubic root of 825781043 is about 938.1846066248.

The spelling of 825781043 in words is "eight hundred twenty-five million, seven hundred eighty-one thousand, forty-three".