12508621 has 4 divisors (see below), whose sum is σ = 12625632. Its totient is φ = 12391612.

The previous prime is 12508609. The next prime is 12508633. The reversal of 12508621 is 12680521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (12508609) and next prime (12508633).

It is a cyclic number.

It is not a de Polignac number, because 12508621 - 2⁵ = 12508589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12508421) 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 3 ways as a sum of consecutive naturals, for example, 58345 + ... + 58558.

It is an arithmetic number, because the mean of its divisors is an integer number (3156408).

Almost surely, 2^12508621 is an apocalyptic number.

It is an amenable number.

12508621 is a deficient number, since it is larger than the sum of its proper divisors (117011).

12508621 is a wasteful number, since it uses less digits than its factorization.

12508621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117010.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 12508621 is about 3536.7528893040. The cubic root of 12508621 is about 232.1327829362.

The spelling of 12508621 in words is "twelve million, five hundred eight thousand, six hundred twenty-one".