8252800121 has 2 divisors, whose sum is σ = 8252800122. Its totient is φ = 8252800120.

The previous prime is 8252800057. The next prime is 8252800139. The reversal of 8252800121 is 1210082528.

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., 8064040000 + 188760121 = 89800^2 + 13739^2 .

It is a cyclic number.

It is not a de Polignac number, because 8252800121 - 2⁶ = 8252800057 is a prime.

It is a super-2 number, since 2×8252800121² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8252800181) 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, 4126400060 + 4126400061.

It is an arithmetic number, because the mean of its divisors is an integer number (4126400061).

Almost surely, 2^8252800121 is an apocalyptic number.

It is an amenable number.

8252800121 is a deficient number, since it is larger than the sum of its proper divisors (1).

8252800121 is an equidigital number, since it uses as much as digits as its factorization.

8252800121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 8252800121 is about 90844.9234740170. The cubic root of 8252800121 is about 2020.8485897261.

Adding to 8252800121 its reverse (1210082528), we get a palindrome (9462882649).

The spelling of 8252800121 in words is "eight billion, two hundred fifty-two million, eight hundred thousand, one hundred twenty-one".