9969206334025 has 27 divisors (see below), whose sum is σ = 12403397187111. Its totient is φ = 7948628161680.

The previous prime is 9969206334011. The next prime is 9969206334029. The reversal of 9969206334025 is 5204336029699.

The square root of 9969206334025 is 3157405.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3588914280249 + 6380292053776 = 1894443^2 + 2525924^2 .

It is not a de Polignac number, because 9969206334025 - 2⁷ = 9969206333897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9969206334029) 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 26 ways as a sum of consecutive naturals, for example, 5667541096 + ... + 5667542854.

Almost surely, 2^{9969206334025} is an apocalyptic number.

9969206334025 is the 3157405-th square number.

9969206334025 is the 1578703-rd centered octagonal number.

It is an amenable number.

9969206334025 is a deficient number, since it is larger than the sum of its proper divisors (2434190853086).

9969206334025 is an frugal number, since it uses more digits than its factorization.

9969206334025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4246 (or 2123 counting only the distinct ones).

The product of its (nonzero) digits is 18895680, while the sum is 58.

The spelling of 9969206334025 in words is "nine trillion, nine hundred sixty-nine billion, two hundred six million, three hundred thirty-four thousand, twenty-five".