12779295429025 has 12 divisors (see below), whose sum is σ = 15846486188544. Its totient is φ = 10223333210000.

The previous prime is 12779295429011. The next prime is 12779295429053. The reversal of 12779295429025 is 52092459297721.

12779295429025 is a nontrivial binomial coefficient, being equal to C(5055551, 2).

It is a de Polignac number, because none of the positive numbers 2^k-12779295429025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1 + ... + 5055550.

It is an arithmetic number, because the mean of its divisors is an integer number (1320540515712).

Almost surely, 2^{12779295429025} is an apocalyptic number.

12779295429025 is the 5055550-th triangular number.

12779295429025 is the 1685184-th centered nonagonal number.

It is an amenable number.

12779295429025 is a deficient number, since it is larger than the sum of its proper divisors (3067190759519).

12779295429025 is a wasteful number, since it uses less digits than its factorization.

12779295429025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5156672 (or 5156667 counting only the distinct ones).

The product of its (nonzero) digits is 57153600, while the sum is 64.

The spelling of 12779295429025 in words is "twelve trillion, seven hundred seventy-nine billion, two hundred ninety-five million, four hundred twenty-nine thousand, twenty-five".