8121125 has 8 divisors (see below), whose sum is σ = 10135320. Its totient is φ = 6496800.

The previous prime is 8121119. The next prime is 8121199. The reversal of 8121125 is 5211218.

It is a happy number.

8121125 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1240996 + 6880129 = 1114^2 + 2623^2 .

It is not a de Polignac number, because 8121125 - 2¹⁴ = 8104741 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8121097 and 8121106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32360 + ... + 32609.

It is an arithmetic number, because the mean of its divisors is an integer number (1266915).

Almost surely, 2^8121125 is an apocalyptic number.

It is an amenable number.

8121125 is a deficient number, since it is larger than the sum of its proper divisors (2014195).

8121125 is an equidigital number, since it uses as much as digits as its factorization.

8121125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64984 (or 64974 counting only the distinct ones).

The product of its digits is 160, while the sum is 20.

The square root of 8121125 is about 2849.7587617200. The cubic root of 8121125 is about 201.0043232323.

The spelling of 8121125 in words is "eight million, one hundred twenty-one thousand, one hundred twenty-five".