9809392680025 has 27 divisors (see below), whose sum is σ = 12921594991869. Its totient is φ = 7385695217280.

The previous prime is 9809392679899. The next prime is 9809392680037. The reversal of 9809392680025 is 5200862939089.

The square root of 9809392680025 is 3131995.

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

It can be written as a sum of positive squares in 4 ways, for example, as 229451538121 + 9579941141904 = 479011^2 + 3095148^2 .

It is not a de Polignac number, because 9809392680025 - 2¹¹ = 9809392677977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 266201152 + ... + 266237998.

Almost surely, 2^{9809392680025} is an apocalyptic number.

9809392680025 is the 3131995-th square number.

9809392680025 is the 1565998-th centered octagonal number.

It is an amenable number.

9809392680025 is a deficient number, since it is larger than the sum of its proper divisors (3112202311844).

9809392680025 is an frugal number, since it uses more digits than its factorization.

9809392680025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73738 (or 36869 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 61.

The spelling of 9809392680025 in words is "nine trillion, eight hundred nine billion, three hundred ninety-two million, six hundred eighty thousand, twenty-five".