12508655 has 8 divisors (see below), whose sum is σ = 15494784. Its totient is φ = 9684000.

The previous prime is 12508633. The next prime is 12508663. The reversal of 12508655 is 55680521.

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

It is not a de Polignac number, because 12508655 - 2¹² = 12504559 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40196 + ... + 40505.

It is an arithmetic number, because the mean of its divisors is an integer number (1936848).

Almost surely, 2^12508655 is an apocalyptic number.

12508655 is a deficient number, since it is larger than the sum of its proper divisors (2986129).

12508655 is an equidigital number, since it uses as much as digits as its factorization.

12508655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80737.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 12508655 is about 3536.7576959696. The cubic root of 12508655 is about 232.1329932580.

The spelling of 12508655 in words is "twelve million, five hundred eight thousand, six hundred fifty-five".