8252123109 has 4 divisors (see below), whose sum is σ = 11002830816. Its totient is φ = 5501415404.

The previous prime is 8252123071. The next prime is 8252123123. The reversal of 8252123109 is 9013212528.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8252123109 - 2²¹ = 8250025957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8252123109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8252123129) 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 in 3 ways as a sum of consecutive naturals, for example, 1375353849 + ... + 1375353854.

It is an arithmetic number, because the mean of its divisors is an integer number (2750707704).

Almost surely, 2^8252123109 is an apocalyptic number.

It is an amenable number.

8252123109 is a deficient number, since it is larger than the sum of its proper divisors (2750707707).

8252123109 is a wasteful number, since it uses less digits than its factorization.

8252123109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2750707706.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 8252123109 is about 90841.1972014900. The cubic root of 8252123109 is about 2020.7933286374.

The spelling of 8252123109 in words is "eight billion, two hundred fifty-two million, one hundred twenty-three thousand, one hundred nine".