72225187 has 2 divisors, whose sum is σ = 72225188. Its totient is φ = 72225186.

The previous prime is 72225173. The next prime is 72225203. The reversal of 72225187 is 78152227.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72225187 is a prime.

It is not a weakly prime, because it can be changed into another prime (72225157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36112593 + 36112594.

It is an arithmetic number, because the mean of its divisors is an integer number (36112594).

Almost surely, 2^72225187 is an apocalyptic number.

72225187 is a deficient number, since it is larger than the sum of its proper divisors (1).

72225187 is an equidigital number, since it uses as much as digits as its factorization.

72225187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15680, while the sum is 34.

The square root of 72225187 is about 8498.5402864257. The cubic root of 72225187 is about 416.4500241958.

The spelling of 72225187 in words is "seventy-two million, two hundred twenty-five thousand, one hundred eighty-seven".