9942732225 has 36 divisors (see below), whose sum is σ = 17816307600. Its totient is φ = 5300477280.

The previous prime is 9942732199. The next prime is 9942732227. The reversal of 9942732225 is 5222372499.

9942732225 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9942732225 - 2¹⁵ = 9942699457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (9942732227) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 589966 + ... + 606584.

Almost surely, 2^9942732225 is an apocalyptic number.

9942732225 is the 49857-th decagonal number.

It is an amenable number.

9942732225 is a deficient number, since it is larger than the sum of its proper divisors (7873575375).

9942732225 is a wasteful number, since it uses less digits than its factorization.

9942732225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19294 (or 19286 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 9942732225 is about 99713.2499971794. The cubic root of 9942732225 is about 2150.3141581672.

The spelling of 9942732225 in words is "nine billion, nine hundred forty-two million, seven hundred thirty-two thousand, two hundred twenty-five".