12505015 has 4 divisors (see below), whose sum is σ = 15006024. Its totient is φ = 10004008.

The previous prime is 12504977. The next prime is 12505037. The reversal of 12505015 is 51050521.

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

It is a cyclic number.

It is not a de Polignac number, because 12505015 - 2¹³ = 12496823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12504983 and 12505001.

It is a congruent 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, 1250497 + ... + 1250506.

It is an arithmetic number, because the mean of its divisors is an integer number (3751506).

Almost surely, 2^12505015 is an apocalyptic number.

12505015 is a deficient number, since it is larger than the sum of its proper divisors (2501009).

12505015 is an equidigital number, since it uses as much as digits as its factorization.

12505015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501008.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 12505015 is about 3536.2430629130. The cubic root of 12505015 is about 232.1104742882.

Adding to 12505015 its reverse (51050521), we get a palindrome (63555536).

The spelling of 12505015 in words is "twelve million, five hundred five thousand, fifteen".