9943953525 has 96 divisors (see below), whose sum is σ = 20977228800. Its totient is φ = 4567492800.

The previous prime is 9943953457. The next prime is 9943953553. The reversal of 9943953525 is 5253593499.

It is a happy number.

It is not a de Polignac number, because 9943953525 - 2⁸ = 9943953269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 105832 + ... + 176318.

It is an arithmetic number, because the mean of its divisors is an integer number (218512800).

Almost surely, 2^9943953525 is an apocalyptic number.

9943953525 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

9943953525 is an abundant number, since it is smaller than the sum of its proper divisors (11033275275).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9943953525 is a wasteful number, since it uses less digits than its factorization.

9943953525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70536 (or 70525 counting only the distinct ones).

The product of its digits is 6561000, while the sum is 54.

The square root of 9943953525 is about 99719.3738698755. The cubic root of 9943953525 is about 2150.4021980575.

The spelling of 9943953525 in words is "nine billion, nine hundred forty-three million, nine hundred fifty-three thousand, five hundred twenty-five".