12540275 has 24 divisors (see below), whose sum is σ = 17522688. Its totient is φ = 8820000.

The previous prime is 12540263. The next prime is 12540317. The reversal of 12540275 is 57204521.

12540275 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12540275 - 2⁴ = 12540259 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7790 + ... + 9260.

It is an arithmetic number, because the mean of its divisors is an integer number (730112).

Almost surely, 2^12540275 is an apocalyptic number.

12540275 is a deficient number, since it is larger than the sum of its proper divisors (4982413).

12540275 is a wasteful number, since it uses less digits than its factorization.

12540275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523 (or 1518 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 12540275 is about 3541.2250705088. The cubic root of 12540275 is about 232.3284277811.

Adding to 12540275 its reverse (57204521), we get a palindrome (69744796).

The spelling of 12540275 in words is "twelve million, five hundred forty thousand, two hundred seventy-five".