9988752725 has 24 divisors (see below), whose sum is σ = 14484697920. Its totient is φ = 6690136320.

The previous prime is 9988752701. The next prime is 9988752727. The reversal of 9988752725 is 5272578899.

It is a happy number.

It is not a de Polignac number, because 9988752725 - 2⁶ = 9988752661 is a prime.

It is a super-3 number, since 3×9988752725³ (a number of 31 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9988752727) 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, 656180 + ... + 671229.

It is an arithmetic number, because the mean of its divisors is an integer number (603529080).

Almost surely, 2^9988752725 is an apocalyptic number.

It is an amenable number.

9988752725 is a deficient number, since it is larger than the sum of its proper divisors (4495945195).

9988752725 is a wasteful number, since it uses less digits than its factorization.

9988752725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327469 (or 1327464 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 62.

The square root of 9988752725 is about 99943.7478034519. The cubic root of 9988752725 is about 2153.6266697076.

The spelling of 9988752725 in words is "nine billion, nine hundred eighty-eight million, seven hundred fifty-two thousand, seven hundred twenty-five".