72928296238225 has 12 divisors (see below), whose sum is σ = 90431261230860. Its totient is φ = 58342524800000.

The previous prime is 72928296238163. The next prime is 72928296238241. The reversal of 72928296238225 is 52283269282927.

It can be written as a sum of positive squares in 6 ways, for example, as 697063019409 + 72231233218816 = 834903^2 + 8498896^2 .

It is not a de Polignac number, because 72928296238225 - 2¹¹ = 72928296236177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11985261 + ... + 17014789.

It is an arithmetic number, because the mean of its divisors is an integer number (7535938435905).

Almost surely, 2^{72928296238225} is an apocalyptic number.

It is an amenable number.

72928296238225 is a deficient number, since it is larger than the sum of its proper divisors (17502964992635).

72928296238225 is a wasteful number, since it uses less digits than its factorization.

72928296238225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609540 (or 5609535 counting only the distinct ones).

The product of its digits is 209018880, while the sum is 67.

The spelling of 72928296238225 in words is "seventy-two trillion, nine hundred twenty-eight billion, two hundred ninety-six million, two hundred thirty-eight thousand, two hundred twenty-five".