12515261 has 8 divisors (see below), whose sum is σ = 13911264. Its totient is φ = 11162320.

The previous prime is 12515203. The next prime is 12515311. The reversal of 12515261 is 16251521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12515261 - 2¹⁰ = 12514237 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 (12515201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10151 + ... + 11316.

It is an arithmetic number, because the mean of its divisors is an integer number (1738908).

Almost surely, 2^12515261 is an apocalyptic number.

12515261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12515261 is a deficient number, since it is larger than the sum of its proper divisors (1396003).

12515261 is a wasteful number, since it uses less digits than its factorization.

12515261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21531.

The product of its digits is 600, while the sum is 23.

The square root of 12515261 is about 3537.6914789167. The cubic root of 12515261 is about 232.1738503201.

Adding to 12515261 its reverse (16251521), we get a palindrome (28766782).

The spelling of 12515261 in words is "twelve million, five hundred fifteen thousand, two hundred sixty-one".