12504805 has 4 divisors (see below), whose sum is σ = 15005772. Its totient is φ = 10003840.

The previous prime is 12504803. The next prime is 12504841. The reversal of 12504805 is 50840521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6749604 + 5755201 = 2598^2 + 2399^2 .

It is not a de Polignac number, because 12504805 - 2¹ = 12504803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12504805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12504803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250476 + ... + 1250485.

It is an arithmetic number, because the mean of its divisors is an integer number (3751443).

Almost surely, 2^12504805 is an apocalyptic number.

It is an amenable number.

12504805 is a deficient number, since it is larger than the sum of its proper divisors (2500967).

12504805 is an equidigital number, since it uses as much as digits as its factorization.

12504805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500966.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 12504805 is about 3536.2133702592. The cubic root of 12504805 is about 232.1091749836.

The spelling of 12504805 in words is "twelve million, five hundred four thousand, eight hundred five".