12510512305 has 4 divisors (see below), whose sum is σ = 15012614772. Its totient is φ = 10008409840.

The previous prime is 12510512299. The next prime is 12510512351. The reversal of 12510512305 is 50321501521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50321501521 = 863 ⋅58309967.

It can be written as a sum of positive squares in 2 ways, for example, as 8799753249 + 3710759056 = 93807^2 + 60916^2 .

It is not a de Polignac number, because 12510512305 - 2¹³ = 12510504113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12510512305.

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, 1251051226 + ... + 1251051235.

It is an arithmetic number, because the mean of its divisors is an integer number (3753153693).

Almost surely, 2^12510512305 is an apocalyptic number.

It is an amenable number.

12510512305 is a deficient number, since it is larger than the sum of its proper divisors (2502102467).

12510512305 is an equidigital number, since it uses as much as digits as its factorization.

12510512305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502102466.

The product of its (nonzero) digits is 1500, while the sum is 25.

The spelling of 12510512305 in words is "twelve billion, five hundred ten million, five hundred twelve thousand, three hundred five".