9967817125 has 16 divisors (see below), whose sum is σ = 14216956416. Its totient is φ = 6835074000.

The previous prime is 9967817089. The next prime is 9967817129. The reversal of 9967817125 is 5217187699.

It is a happy number.

9967817125 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9967817125 - 2¹³ = 9967808933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9967817129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5695021 + ... + 5696770.

It is an arithmetic number, because the mean of its divisors is an integer number (888559776).

Almost surely, 2^9967817125 is an apocalyptic number.

It is an amenable number.

9967817125 is a deficient number, since it is larger than the sum of its proper divisors (4249139291).

9967817125 is a wasteful number, since it uses less digits than its factorization.

9967817125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11391813 (or 11391803 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 55.

The square root of 9967817125 is about 99838.9559490683. The cubic root of 9967817125 is about 2152.1210094800.

The spelling of 9967817125 in words is "nine billion, nine hundred sixty-seven million, eight hundred seventeen thousand, one hundred twenty-five".