8812505309 has 2 divisors, whose sum is σ = 8812505310. Its totient is φ = 8812505308.

The previous prime is 8812505293. The next prime is 8812505321. The reversal of 8812505309 is 9035052188.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8431279684 + 381225625 = 91822^2 + 19525^2 .

It is a cyclic number.

It is not a de Polignac number, because 8812505309 - 2⁴ = 8812505293 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8812505389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4406252654 + 4406252655.

It is an arithmetic number, because the mean of its divisors is an integer number (4406252655).

Almost surely, 2^8812505309 is an apocalyptic number.

It is an amenable number.

8812505309 is a deficient number, since it is larger than the sum of its proper divisors (1).

8812505309 is an equidigital number, since it uses as much as digits as its factorization.

8812505309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 8812505309 is about 93874.9450545778. The cubic root of 8812505309 is about 2065.5377212035.

The spelling of 8812505309 in words is "eight billion, eight hundred twelve million, five hundred five thousand, three hundred nine".