825133687994 has 32 divisors (see below), whose sum is σ = 1544664563712. Its totient is φ = 321156198000.

The previous prime is 825133687991. The next prime is 825133688011. The reversal of 825133687994 is 499786331528.

It is a self number, because there is not a number n which added to its sum of digits gives 825133687994.

It is not an unprimeable number, because it can be changed into a prime (825133687991) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2550722 + ... + 2855949.

It is an arithmetic number, because the mean of its divisors is an integer number (48270767616).

Almost surely, 2^825133687994 is an apocalyptic number.

825133687994 is a deficient number, since it is larger than the sum of its proper divisors (719530875718).

825133687994 is a wasteful number, since it uses less digits than its factorization.

825133687994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5407682.

The product of its digits is 78382080, while the sum is 65.

The spelling of 825133687994 in words is "eight hundred twenty-five billion, one hundred thirty-three million, six hundred eighty-seven thousand, nine hundred ninety-four".