72425237 has 2 divisors, whose sum is σ = 72425238. Its totient is φ = 72425236.

The previous prime is 72425153. The next prime is 72425257. The reversal of 72425237 is 73252427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60824401 + 11600836 = 7799^2 + 3406^2 .

It is an emirp because it is prime and its reverse (73252427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72425237 - 2¹⁸ = 72163093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72425257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36212618 + 36212619.

It is an arithmetic number, because the mean of its divisors is an integer number (36212619).

Almost surely, 2^72425237 is an apocalyptic number.

It is an amenable number.

72425237 is a deficient number, since it is larger than the sum of its proper divisors (1).

72425237 is an equidigital number, since it uses as much as digits as its factorization.

72425237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 32.

The square root of 72425237 is about 8510.3018160345. The cubic root of 72425237 is about 416.8341654747.

The spelling of 72425237 in words is "seventy-two million, four hundred twenty-five thousand, two hundred thirty-seven".