72616108225 has 6 divisors (see below), whose sum is σ = 90043974230. Its totient is φ = 58092886560.

The previous prime is 72616108207. The next prime is 72616108241. The reversal of 72616108225 is 52280161627.

It can be written as a sum of positive squares in 3 ways, for example, as 17594430736 + 55021677489 = 132644^2 + 234567^2 .

It is not a de Polignac number, because 72616108225 - 2³³ = 64026173633 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1452322140 + ... + 1452322189.

Almost surely, 2^72616108225 is an apocalyptic number.

It is an amenable number.

72616108225 is a deficient number, since it is larger than the sum of its proper divisors (17427866005).

72616108225 is a wasteful number, since it uses less digits than its factorization.

72616108225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904644339 (or 2904644334 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 72616108225 in words is "seventy-two billion, six hundred sixteen million, one hundred eight thousand, two hundred twenty-five".