72265511 has 2 divisors, whose sum is σ = 72265512. Its totient is φ = 72265510.

The previous prime is 72265483. The next prime is 72265549. The reversal of 72265511 is 11556227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72265511 - 2¹⁰ = 72264487 is a prime.

It is a super-2 number, since 2×72265511² = 10444608160182242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72265111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36132755 + 36132756.

It is an arithmetic number, because the mean of its divisors is an integer number (36132756).

Almost surely, 2^72265511 is an apocalyptic number.

72265511 is a deficient number, since it is larger than the sum of its proper divisors (1).

72265511 is an equidigital number, since it uses as much as digits as its factorization.

72265511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 29.

The square root of 72265511 is about 8500.9123627997. The cubic root of 72265511 is about 416.5275124296.

The spelling of 72265511 in words is "seventy-two million, two hundred sixty-five thousand, five hundred eleven".