12745234385 has 8 divisors (see below), whose sum is σ = 16470764520. Its totient is φ = 9411865344.

The previous prime is 12745234351. The next prime is 12745234387. The reversal of 12745234385 is 58343254721.

It can be written as a sum of positive squares in 4 ways, for example, as 77281681 + 12667952704 = 8791^2 + 112552^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12745234385 - 2¹⁴ = 12745218001 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12745234387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98040200 + ... + 98040329.

It is an arithmetic number, because the mean of its divisors is an integer number (2058845565).

Almost surely, 2^12745234385 is an apocalyptic number.

It is an amenable number.

12745234385 is a deficient number, since it is larger than the sum of its proper divisors (3725530135).

12745234385 is a wasteful number, since it uses less digits than its factorization.

12745234385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196080547.

The product of its digits is 806400, while the sum is 44.

The spelling of 12745234385 in words is "twelve billion, seven hundred forty-five million, two hundred thirty-four thousand, three hundred eighty-five".