99899789925 has 24 divisors (see below), whose sum is σ = 177872858464. Its totient is φ = 49181434560.

The previous prime is 99899789903. The next prime is 99899789933. The reversal of 99899789925 is 52998799899.

It is not a de Polignac number, because 99899789925 - 2¹⁴ = 99899773541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51229687 + ... + 51231636.

Almost surely, 2^99899789925 is an apocalyptic number.

It is an amenable number.

99899789925 is a deficient number, since it is larger than the sum of its proper divisors (77973068539).

99899789925 is a wasteful number, since it uses less digits than its factorization.

99899789925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102461349 (or 102461344 counting only the distinct ones).

The product of its digits is 2380855680, while the sum is 84.

The spelling of 99899789925 in words is "ninety-nine billion, eight hundred ninety-nine million, seven hundred eighty-nine thousand, nine hundred twenty-five".