12506505 has 16 divisors (see below), whose sum is σ = 21829824. Its totient is φ = 6063680.

The previous prime is 12506497. The next prime is 12506519. The reversal of 12506505 is 50560521.

It is not a de Polignac number, because 12506505 - 2³ = 12506497 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37734 + ... + 38063.

It is an arithmetic number, because the mean of its divisors is an integer number (1364364).

Almost surely, 2^12506505 is an apocalyptic number.

12506505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12506505 is a deficient number, since it is larger than the sum of its proper divisors (9323319).

12506505 is a wasteful number, since it uses less digits than its factorization.

12506505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75816.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 12506505 is about 3536.4537322012. The cubic root of 12506505 is about 232.1196927464.

The spelling of 12506505 in words is "twelve million, five hundred six thousand, five hundred five".