12539725 has 12 divisors (see below), whose sum is σ = 16963200. Its totient is φ = 9119600.

The previous prime is 12539711. The next prime is 12539729. The reversal of 12539725 is 52793521.

It is a de Polignac number, because none of the positive numbers 2^k-12539725 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12539729) 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, 22525 + ... + 23074.

It is an arithmetic number, because the mean of its divisors is an integer number (1413600).

Almost surely, 2^12539725 is an apocalyptic number.

It is an amenable number.

12539725 is a deficient number, since it is larger than the sum of its proper divisors (4423475).

12539725 is a wasteful number, since it uses less digits than its factorization.

12539725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45620 (or 45615 counting only the distinct ones).

The product of its digits is 18900, while the sum is 34.

The square root of 12539725 is about 3541.1474129158. The cubic root of 12539725 is about 232.3250311915.

The spelling of 12539725 in words is "twelve million, five hundred thirty-nine thousand, seven hundred twenty-five".