9885708025 has 6 divisors (see below), whose sum is σ = 12258277982. Its totient is φ = 7908566400.

The previous prime is 9885707977. The next prime is 9885708043. The reversal of 9885708025 is 5208075889.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 61528336 + 9824179689 = 7844^2 + 99117^2 .

It is a de Polignac number, because none of the positive numbers 2^k-9885708025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197714136 + ... + 197714185.

Almost surely, 2^9885708025 is an apocalyptic number.

It is an amenable number.

9885708025 is a deficient number, since it is larger than the sum of its proper divisors (2372569957).

9885708025 is a wasteful number, since it uses less digits than its factorization.

9885708025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395428331 (or 395428326 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 52.

The square root of 9885708025 is about 99426.8978948856. The cubic root of 9885708025 is about 2146.1954005024.

The spelling of 9885708025 in words is "nine billion, eight hundred eighty-five million, seven hundred eight thousand, twenty-five".