12515253101 has 4 divisors (see below), whose sum is σ = 13477964892. Its totient is φ = 11552541312.

The previous prime is 12515253077. The next prime is 12515253119. The reversal of 12515253101 is 10135251521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10135251521 = 151 ⋅67120871.

It can be written as a sum of positive squares in 2 ways, for example, as 3885028900 + 8630224201 = 62330^2 + 92899^2 .

It is not a de Polignac number, because 12515253101 - 2¹⁰ = 12515252077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12515253161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481355876 + ... + 481355901.

It is an arithmetic number, because the mean of its divisors is an integer number (3369491223).

Almost surely, 2^12515253101 is an apocalyptic number.

It is an amenable number.

12515253101 is a deficient number, since it is larger than the sum of its proper divisors (962711791).

12515253101 is an equidigital number, since it uses as much as digits as its factorization.

12515253101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962711790.

The product of its (nonzero) digits is 1500, while the sum is 26.

The spelling of 12515253101 in words is "twelve billion, five hundred fifteen million, two hundred fifty-three thousand, one hundred one".