9725532730 has 24 divisors (see below), whose sum is σ = 17635012668. Its totient is φ = 3861742848.

The previous prime is 9725532721. The next prime is 9725532757. The reversal of 9725532730 is 372355279.

It can be written as a sum of positive squares in 6 ways, for example, as 4376219409 + 5349313321 = 66153^2 + 73139^2 .

It is a super-3 number, since 3×9725532730³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161782 + ... + 213598.

Almost surely, 2^9725532730 is an apocalyptic number.

9725532730 is a deficient number, since it is larger than the sum of its proper divisors (7909479938).

9725532730 is a wasteful number, since it uses less digits than its factorization.

9725532730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52098 (or 51961 counting only the distinct ones).

The product of its (nonzero) digits is 396900, while the sum is 43.

The square root of 9725532730 is about 98618.1156279109. The cubic root of 9725532730 is about 2134.5408303808.

The spelling of 9725532730 in words is "nine billion, seven hundred twenty-five million, five hundred thirty-two thousand, seven hundred thirty".