12512855 has 4 divisors (see below), whose sum is σ = 15015432. Its totient is φ = 10010280.

The previous prime is 12512839. The next prime is 12512881. The reversal of 12512855 is 55821521.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12512855 - 2⁴ = 12512839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1251281 + ... + 1251290.

It is an arithmetic number, because the mean of its divisors is an integer number (3753858).

Almost surely, 2^12512855 is an apocalyptic number.

12512855 is a deficient number, since it is larger than the sum of its proper divisors (2502577).

12512855 is an equidigital number, since it uses as much as digits as its factorization.

12512855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502576.

The product of its digits is 4000, while the sum is 29.

The square root of 12512855 is about 3537.3514103069. The cubic root of 12512855 is about 232.1589712567.

The spelling of 12512855 in words is "twelve million, five hundred twelve thousand, eight hundred fifty-five".