12115125 has 72 divisors (see below), whose sum is σ = 24275160. Its totient is φ = 5808000.

The previous prime is 12115123. The next prime is 12115133. The reversal of 12115125 is 52151121.

It can be written as a sum of positive squares in 4 ways, for example, as 1656369 + 10458756 = 1287^2 + 3234^2 .

It is not a de Polignac number, because 12115125 - 2¹ = 12115123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12115098 and 12115107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12115123) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 136081 + ... + 136169.

It is an arithmetic number, because the mean of its divisors is an integer number (337155).

Almost surely, 2^12115125 is an apocalyptic number.

12115125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12115125 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

12115125 is a wasteful number, since it uses less digits than its factorization.

12115125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 108 counting only the distinct ones).

The product of its digits is 100, while the sum is 18.

The square root of 12115125 is about 3480.6788131053. The cubic root of 12115125 is about 229.6726597381.

Adding to 12115125 its reverse (52151121), we get a palindrome (64266246).

It can be divided in two parts, 1211 and 5125, that added together give a palindrome (6336).

The spelling of 12115125 in words is "twelve million, one hundred fifteen thousand, one hundred twenty-five".