72225817892 has 12 divisors (see below), whose sum is σ = 126397081776. Its totient is φ = 36112365960.

The previous prime is 72225817879. The next prime is 72225817907. The reversal of 72225817892 is 29871852227.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388463 + ... + 543465.

It is an arithmetic number, because the mean of its divisors is an integer number (10533090148).

Almost surely, 2^72225817892 is an apocalyptic number.

It is an amenable number.

72225817892 is a deficient number, since it is larger than the sum of its proper divisors (54171263884).

72225817892 is a wasteful number, since it uses less digits than its factorization.

72225817892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271498 (or 271496 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 53.

The spelling of 72225817892 in words is "seventy-two billion, two hundred twenty-five million, eight hundred seventeen thousand, eight hundred ninety-two".