12777752652625 has 8 divisors (see below), whose sum is σ = 15946635310632. Its totient is φ = 10222202122000.

The previous prime is 12777752652593. The next prime is 12777752652641. The reversal of 12777752652625 is 52625625777721.

It can be written as a sum of positive squares in 4 ways, for example, as 3706518253824 + 9071234398801 = 1925232^2 + 3011849^2 .

It is not a de Polignac number, because 12777752652625 - 2⁵ = 12777752652593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 51111010486 + ... + 51111010735.

It is an arithmetic number, because the mean of its divisors is an integer number (1993329413829).

Almost surely, 2^{12777752652625} is an apocalyptic number.

It is an amenable number.

12777752652625 is a deficient number, since it is larger than the sum of its proper divisors (3168882658007).

12777752652625 is an equidigital number, since it uses as much as digits as its factorization.

12777752652625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102222021236 (or 102222021226 counting only the distinct ones).

The product of its digits is 172872000, while the sum is 64.

The spelling of 12777752652625 in words is "twelve trillion, seven hundred seventy-seven billion, seven hundred fifty-two million, six hundred fifty-two thousand, six hundred twenty-five".