8529012509 has 2 divisors, whose sum is σ = 8529012510. Its totient is φ = 8529012508.

The previous prime is 8529012473. The next prime is 8529012553. The reversal of 8529012509 is 9052109258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8354508409 + 174504100 = 91403^2 + 13210^2 .

It is a cyclic number.

It is not a de Polignac number, because 8529012509 - 2¹⁶ = 8528946973 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8529014509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4264506254 + 4264506255.

It is an arithmetic number, because the mean of its divisors is an integer number (4264506255).

Almost surely, 2^8529012509 is an apocalyptic number.

It is an amenable number.

8529012509 is a deficient number, since it is larger than the sum of its proper divisors (1).

8529012509 is an equidigital number, since it uses as much as digits as its factorization.

8529012509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 8529012509 is about 92352.6529613524. The cubic root of 8529012509 is about 2043.1468564398.

The spelling of 8529012509 in words is "eight billion, five hundred twenty-nine million, twelve thousand, five hundred nine".