12625128 has 24 divisors (see below), whose sum is σ = 34193250. Its totient is φ = 4208352.

The previous prime is 12625111. The next prime is 12625133. The reversal of 12625128 is 82152621.

It is a happy number.

12625128 is a `hidden beast` number, since 12 + 625 + 1 + 28 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7064964 + 5560164 = 2658^2 + 2358^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 87603 + ... + 87746.

Almost surely, 2^12625128 is an apocalyptic number.

12625128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12625128 is an abundant number, since it is smaller than the sum of its proper divisors (21568122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12625128 is a wasteful number, since it uses less digits than its factorization.

12625128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175361 (or 175354 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 12625128 is about 3553.1856129395. The cubic root of 12625128 is about 232.8512623146.

Adding to 12625128 its reverse (82152621), we get a palindrome (94777749).

The spelling of 12625128 in words is "twelve million, six hundred twenty-five thousand, one hundred twenty-eight".