13121125 has 16 divisors (see below), whose sum is σ = 16823664. Its totient is φ = 10209600.

The previous prime is 13121117. The next prime is 13121159. The reversal of 13121125 is 52112131.

It can be written as a sum of positive squares in 8 ways, for example, as 5157441 + 7963684 = 2271^2 + 2822^2 .

It is not a de Polignac number, because 13121125 - 2³ = 13121117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13121099 and 13121108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3207 + ... + 6043.

It is an arithmetic number, because the mean of its divisors is an integer number (1051479).

Almost surely, 2^13121125 is an apocalyptic number.

It is an amenable number.

13121125 is a deficient number, since it is larger than the sum of its proper divisors (3702539).

13121125 is an equidigital number, since it uses as much as digits as its factorization.

13121125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2889 (or 2879 counting only the distinct ones).

The product of its digits is 60, while the sum is 16.

The square root of 13121125 is about 3622.3093462596. The cubic root of 13121125 is about 235.8614826812.

Adding to 13121125 its reverse (52112131), we get a palindrome (65233256).

The spelling of 13121125 in words is "thirteen million, one hundred twenty-one thousand, one hundred twenty-five".