9217513972225 has 48 divisors (see below), whose sum is σ = 12412127795200. Its totient is φ = 6749763955200.

The previous prime is 9217513972217. The next prime is 9217513972229. The reversal of 9217513972225 is 5222793157129.

It is not a de Polignac number, because 9217513972225 - 2³ = 9217513972217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9217513972229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82948501 + ... + 83059549.

Almost surely, 2^{9217513972225} is an apocalyptic number.

It is an amenable number.

9217513972225 is a deficient number, since it is larger than the sum of its proper divisors (3194613822975).

9217513972225 is a wasteful number, since it uses less digits than its factorization.

9217513972225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113210 (or 113205 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 55.

The spelling of 9217513972225 in words is "nine trillion, two hundred seventeen billion, five hundred thirteen million, nine hundred seventy-two thousand, two hundred twenty-five".