72217125207 has 40 divisors (see below), whose sum is σ = 112665500640. Its totient is φ = 46012570560.

The previous prime is 72217125203. The next prime is 72217125223. The reversal of 72217125207 is 70252171227.

It is a happy number.

It is not a de Polignac number, because 72217125207 - 2² = 72217125203 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72217125203) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2273857 + ... + 2305397.

It is an arithmetic number, because the mean of its divisors is an integer number (2816637516).

Almost surely, 2^72217125207 is an apocalyptic number.

72217125207 is a deficient number, since it is larger than the sum of its proper divisors (40448375433).

72217125207 is a wasteful number, since it uses less digits than its factorization.

72217125207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32805 (or 32796 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 36.

The spelling of 72217125207 in words is "seventy-two billion, two hundred seventeen million, one hundred twenty-five thousand, two hundred seven".