8572500109 has 2 divisors, whose sum is σ = 8572500110. Its totient is φ = 8572500108.

The previous prime is 8572500103. The next prime is 8572500149. The reversal of 8572500109 is 9010052758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5998967209 + 2573532900 = 77453^2 + 50730^2 .

It is a cyclic number.

It is not a de Polignac number, because 8572500109 - 2⁵ = 8572500077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8572500103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4286250054 + 4286250055.

It is an arithmetic number, because the mean of its divisors is an integer number (4286250055).

Almost surely, 2^8572500109 is an apocalyptic number.

It is an amenable number.

8572500109 is a deficient number, since it is larger than the sum of its proper divisors (1).

8572500109 is an equidigital number, since it uses as much as digits as its factorization.

8572500109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 8572500109 is about 92587.7967606963. The cubic root of 8572500109 is about 2046.6134933182.

It can be divided in two parts, 857 and 2500109, that added together give a triangular number (2500966 = T₂₂₃₆).

The spelling of 8572500109 in words is "eight billion, five hundred seventy-two million, five hundred thousand, one hundred nine".