12251040515 has 24 divisors (see below), whose sum is σ = 17137319040. Its totient is φ = 8383095168.

The previous prime is 12251040481. The next prime is 12251040521. The reversal of 12251040515 is 51504015221.

It is not a de Polignac number, because 12251040515 - 2¹⁰ = 12251039491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65159 + ... + 169551.

It is an arithmetic number, because the mean of its divisors is an integer number (714054960).

Almost surely, 2^12251040515 is an apocalyptic number.

12251040515 is a deficient number, since it is larger than the sum of its proper divisors (4886278525).

12251040515 is a wasteful number, since it uses less digits than its factorization.

12251040515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104891 (or 104884 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 12251040515 its reverse (51504015221), we get a palindrome (63755055736).

The spelling of 12251040515 in words is "twelve billion, two hundred fifty-one million, forty thousand, five hundred fifteen".