72485185 has 12 divisors (see below), whose sum is σ = 88793172. Its totient is φ = 56785248.

The previous prime is 72485159. The next prime is 72485197. The reversal of 72485185 is 58158427.

It can be written as a sum of positive squares in 2 ways, for example, as 39388176 + 33097009 = 6276^2 + 5753^2 .

It is not a de Polignac number, because 72485185 - 2¹¹ = 72483137 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 138334 + ... + 138856.

It is an arithmetic number, because the mean of its divisors is an integer number (7399431).

Almost surely, 2^72485185 is an apocalyptic number.

It is an amenable number.

72485185 is a deficient number, since it is larger than the sum of its proper divisors (16307987).

72485185 is an frugal number, since it uses more digits than its factorization.

72485185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104 (or 581 counting only the distinct ones).

The product of its digits is 89600, while the sum is 40.

The square root of 72485185 is about 8513.8231717601. The cubic root of 72485185 is about 416.9491414337.

The spelling of 72485185 in words is "seventy-two million, four hundred eighty-five thousand, one hundred eighty-five".