99078805825 has 24 divisors (see below), whose sum is σ = 125784413568. Its totient is φ = 77376895680.

The previous prime is 99078805823. The next prime is 99078805879. The reversal of 99078805825 is 52850887099.

It is not a de Polignac number, because 99078805825 - 2¹ = 99078805823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99078805823) 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, 1993224 + ... + 2042326.

It is an arithmetic number, because the mean of its divisors is an integer number (5241017232).

Almost surely, 2^99078805825 is an apocalyptic number.

It is an amenable number.

99078805825 is a deficient number, since it is larger than the sum of its proper divisors (26705607743).

99078805825 is a wasteful number, since it uses less digits than its factorization.

99078805825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51033 (or 51028 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 61.

The spelling of 99078805825 in words is "ninety-nine billion, seventy-eight million, eight hundred five thousand, eight hundred twenty-five".