12509275 has 12 divisors (see below), whose sum is σ = 16012864. Its totient is φ = 9684000.

The previous prime is 12509269. The next prime is 12509279. The reversal of 12509275 is 57290521.

It is not a de Polignac number, because 12509275 - 2³ = 12509267 is a prime.

It is a super-2 number, since 2×12509275² = 312963922051250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (12509279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7296 + ... + 8845.

Almost surely, 2^12509275 is an apocalyptic number.

12509275 is a deficient number, since it is larger than the sum of its proper divisors (3503589).

12509275 is a wasteful number, since it uses less digits than its factorization.

12509275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16182 (or 16177 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 12509275 is about 3536.8453457849. The cubic root of 12509275 is about 232.1368284712.

Adding to 12509275 its reverse (57290521), we get a palindrome (69799796).

The spelling of 12509275 in words is "twelve million, five hundred nine thousand, two hundred seventy-five".