825881242673 has 4 divisors (see below), whose sum is σ = 874462492260. Its totient is φ = 777299993088.

The previous prime is 825881242633. The next prime is 825881242687. The reversal of 825881242673 is 376242188528.

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

It can be written as a sum of positive squares in 2 ways, for example, as 558857914624 + 267023328049 = 747568^2 + 516743^2 .

It is a cyclic number.

It is not a de Polignac number, because 825881242673 - 2¹² = 825881238577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825881242603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24290624768 + ... + 24290624801.

It is an arithmetic number, because the mean of its divisors is an integer number (218615623065).

Almost surely, 2^825881242673 is an apocalyptic number.

It is an amenable number.

825881242673 is a deficient number, since it is larger than the sum of its proper divisors (48581249587).

825881242673 is a wasteful number, since it uses less digits than its factorization.

825881242673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48581249586.

The product of its digits is 10321920, while the sum is 56.

The spelling of 825881242673 in words is "eight hundred twenty-five billion, eight hundred eighty-one million, two hundred forty-two thousand, six hundred seventy-three".