72250039 has 2 divisors, whose sum is σ = 72250040. Its totient is φ = 72250038.

The previous prime is 72250033. The next prime is 72250067. The reversal of 72250039 is 93005227.

It is an a-pointer prime, because the next prime (72250067) can be obtained adding 72250039 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72250039 - 2¹³ = 72241847 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72249989 and 72250016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72250033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36125019 + 36125020.

It is an arithmetic number, because the mean of its divisors is an integer number (36125020).

Almost surely, 2^72250039 is an apocalyptic number.

72250039 is a deficient number, since it is larger than the sum of its proper divisors (1).

72250039 is an equidigital number, since it uses as much as digits as its factorization.

72250039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 72250039 is about 8500.0022941173. The cubic root of 72250039 is about 416.4977842159.

The spelling of 72250039 in words is "seventy-two million, two hundred fifty thousand, thirty-nine".