86224225729 has 2 divisors, whose sum is σ = 86224225730. Its totient is φ = 86224225728.

The previous prime is 86224225691. The next prime is 86224225733. The reversal of 86224225729 is 92752242268.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70076678400 + 16147547329 = 264720^2 + 127073^2 .

It is a cyclic number.

It is not a de Polignac number, because 86224225729 - 2¹¹ = 86224223681 is a prime.

It is not a weakly prime, because it can be changed into another prime (86224220729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43112112864 + 43112112865.

It is an arithmetic number, because the mean of its divisors is an integer number (43112112865).

Almost surely, 2^86224225729 is an apocalyptic number.

It is an amenable number.

86224225729 is a deficient number, since it is larger than the sum of its proper divisors (1).

86224225729 is an equidigital number, since it uses as much as digits as its factorization.

86224225729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 49.

The spelling of 86224225729 in words is "eighty-six billion, two hundred twenty-four million, two hundred twenty-five thousand, seven hundred twenty-nine".