12515005 has 4 divisors (see below), whose sum is σ = 15018012. Its totient is φ = 10012000.

The previous prime is 12515003. The next prime is 12515023. The reversal of 12515005 is 50051521.

12515005 = 2501² + 2502².

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 6260004 + 6255001 = 2502^2 + 2501^2 .

It is not a de Polignac number, because 12515005 - 2¹ = 12515003 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 (12515003) 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, 1251496 + ... + 1251505.

It is an arithmetic number, because the mean of its divisors is an integer number (3754503).

Almost surely, 2^12515005 is an apocalyptic number.

12515005 is the 2502-nd centered square number.

It is an amenable number.

12515005 is a deficient number, since it is larger than the sum of its proper divisors (2503007).

12515005 is an equidigital number, since it uses as much as digits as its factorization.

12515005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503006.

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

The square root of 12515005 is about 3537.6552969446. The cubic root of 12515005 is about 232.1722672685.

Adding to 12515005 its reverse (50051521), we get a palindrome (62566526).

The spelling of 12515005 in words is "twelve million, five hundred fifteen thousand, five".