825043993443 has 24 divisors (see below), whose sum is σ = 1192819914000. Its totient is φ = 549526616064.

The previous prime is 825043993373. The next prime is 825043993469. The reversal of 825043993443 is 344399340528.

825043993443 is a `hidden beast` number, since 8 + 2 + 504 + 3 + 9 + 93 + 4 + 43 = 666.

It is not a de Polignac number, because 825043993443 - 2¹⁴ = 825043977059 is a prime.

It is a super-2 number, since 2×825043993443² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 825043993443.

It is not an unprimeable number, because it can be changed into a prime (825043993483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63955408 + ... + 63968306.

It is an arithmetic number, because the mean of its divisors is an integer number (49700829750).

Almost surely, 2^825043993443 is an apocalyptic number.

825043993443 is a deficient number, since it is larger than the sum of its proper divisors (367775920557).

825043993443 is a wasteful number, since it uses less digits than its factorization.

825043993443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18851 (or 18848 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 54.

The spelling of 825043993443 in words is "eight hundred twenty-five billion, forty-three million, nine hundred ninety-three thousand, four hundred forty-three".