12968555225 has 18 divisors (see below), whose sum is σ = 16477860714. Its totient is φ = 10118953600.

The previous prime is 12968555207. The next prime is 12968555293. The reversal of 12968555225 is 52255586921.

It can be written as a sum of positive squares in 9 ways, for example, as 11635721161 + 1332834064 = 107869^2 + 36508^2 .

It is not a de Polignac number, because 12968555225 - 2¹⁰ = 12968554201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3644147 + ... + 3647703.

Almost surely, 2^12968555225 is an apocalyptic number.

It is an amenable number.

12968555225 is a deficient number, since it is larger than the sum of its proper divisors (3509305489).

12968555225 is an frugal number, since it uses more digits than its factorization.

12968555225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7165 (or 3603 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 50.

The spelling of 12968555225 in words is "twelve billion, nine hundred sixty-eight million, five hundred fifty-five thousand, two hundred twenty-five".