72265805273 has 2 divisors, whose sum is σ = 72265805274. Its totient is φ = 72265805272.

The previous prime is 72265805267. The next prime is 72265805317. The reversal of 72265805273 is 37250856227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60070578649 + 12195226624 = 245093^2 + 110432^2 .

It is a cyclic number.

It is not a de Polignac number, because 72265805273 - 2²⁴ = 72249028057 is a prime.

It is a super-2 number, since 2×72265805273² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72265801273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36132902636 + 36132902637.

It is an arithmetic number, because the mean of its divisors is an integer number (36132902637).

Almost surely, 2^72265805273 is an apocalyptic number.

It is an amenable number.

72265805273 is a deficient number, since it is larger than the sum of its proper divisors (1).

72265805273 is an equidigital number, since it uses as much as digits as its factorization.

72265805273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 72265805273 in words is "seventy-two billion, two hundred sixty-five million, eight hundred five thousand, two hundred seventy-three".