12545128 has 8 divisors (see below), whose sum is σ = 23522130. Its totient is φ = 6272560.

The previous prime is 12545089. The next prime is 12545129. The reversal of 12545128 is 82154521.

It can be written as a sum of positive squares in only one way, i.e., 7518564 + 5026564 = 2742^2 + 2242^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12545096 and 12545105.

It is not an unprimeable number, because it can be changed into a prime (12545129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 784063 + ... + 784078.

Almost surely, 2^12545128 is an apocalyptic number.

It is an amenable number.

12545128 is a deficient number, since it is larger than the sum of its proper divisors (10977002).

12545128 is a wasteful number, since it uses less digits than its factorization.

12545128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568147 (or 1568143 counting only the distinct ones).

The product of its digits is 3200, while the sum is 28.

The square root of 12545128 is about 3541.9102190767. The cubic root of 12545128 is about 232.3583937493.

Adding to 12545128 its reverse (82154521), we get a palindrome (94699649).

The spelling of 12545128 in words is "twelve million, five hundred forty-five thousand, one hundred twenty-eight".