99799782425 has 24 divisors (see below), whose sum is σ = 147579709056. Its totient is φ = 65458736640.

The previous prime is 99799782409. The next prime is 99799782437. The reversal of 99799782425 is 52428799799.

It is not a de Polignac number, because 99799782425 - 2⁴ = 99799782409 is a prime.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors.

It is a Duffinian 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 23 ways as a sum of consecutive naturals, for example, 12393464 + ... + 12401513.

It is an arithmetic number, because the mean of its divisors is an integer number (6149154544).

Almost surely, 2^99799782425 is an apocalyptic number.

It is an amenable number.

99799782425 is a deficient number, since it is larger than the sum of its proper divisors (47779926631).

99799782425 is a wasteful number, since it uses less digits than its factorization.

99799782425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24795017 (or 24795012 counting only the distinct ones).

The product of its digits is 205752960, while the sum is 71.

The spelling of 99799782425 in words is "ninety-nine billion, seven hundred ninety-nine million, seven hundred eighty-two thousand, four hundred twenty-five".