12508385 has 4 divisors (see below), whose sum is σ = 15010068. Its totient is φ = 10006704.

The previous prime is 12508373. The next prime is 12508409. The reversal of 12508385 is 58380521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58380521 = 19 ⋅3072659.

It can be written as a sum of positive squares in 2 ways, for example, as 9709456 + 2798929 = 3116^2 + 1673^2 .

It is a cyclic number.

It is not a de Polignac number, because 12508385 - 2¹⁴ = 12492001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250834 + ... + 1250843.

It is an arithmetic number, because the mean of its divisors is an integer number (3752517).

Almost surely, 2^12508385 is an apocalyptic number.

It is an amenable number.

12508385 is a deficient number, since it is larger than the sum of its proper divisors (2501683).

12508385 is an equidigital number, since it uses as much as digits as its factorization.

12508385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501682.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 12508385 is about 3536.7195252098. The cubic root of 12508385 is about 232.1313230449.

The spelling of 12508385 in words is "twelve million, five hundred eight thousand, three hundred eighty-five".