12515755 has 8 divisors (see below), whose sum is σ = 17164512. Its totient is φ = 8582208.

The previous prime is 12515753. The next prime is 12515759. The reversal of 12515755 is 55751521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12515755 - 2¹ = 12515753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12515753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178762 + ... + 178831.

It is an arithmetic number, because the mean of its divisors is an integer number (2145564).

Almost surely, 2^12515755 is an apocalyptic number.

12515755 is a deficient number, since it is larger than the sum of its proper divisors (4648757).

12515755 is an equidigital number, since it uses as much as digits as its factorization.

12515755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357605.

The product of its digits is 8750, while the sum is 31.

The square root of 12515755 is about 3537.7612977701. The cubic root of 12515755 is about 232.1769050539.

The spelling of 12515755 in words is "twelve million, five hundred fifteen thousand, seven hundred fifty-five".