12560652805 has 4 divisors (see below), whose sum is σ = 15072783372. Its totient is φ = 10048522240.

The previous prime is 12560652803. The next prime is 12560652817. The reversal of 12560652805 is 50825606521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50825606521 = 137947 ⋅368443.

It can be written as a sum of positive squares in 2 ways, for example, as 9031461156 + 3529191649 = 95034^2 + 59407^2 .

It is not a de Polignac number, because 12560652805 - 2¹ = 12560652803 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 (12560652803) 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, 1256065276 + ... + 1256065285.

It is an arithmetic number, because the mean of its divisors is an integer number (3768195843).

Almost surely, 2^12560652805 is an apocalyptic number.

It is an amenable number.

12560652805 is a deficient number, since it is larger than the sum of its proper divisors (2512130567).

12560652805 is an equidigital number, since it uses as much as digits as its factorization.

12560652805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512130566.

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 12560652805 in words is "twelve billion, five hundred sixty million, six hundred fifty-two thousand, eight hundred five".