12511258125 has 20 divisors (see below), whose sum is σ = 20845427328. Its totient is φ = 6672670000.

The previous prime is 12511258093. The next prime is 12511258139. The reversal of 12511258125 is 52185211521.

It is not a de Polignac number, because 12511258125 - 2⁵ = 12511258093 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3334461 + ... + 3338210.

Almost surely, 2^12511258125 is an apocalyptic number.

12511258125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12511258125 is a deficient number, since it is larger than the sum of its proper divisors (8334169203).

12511258125 is an frugal number, since it uses more digits than its factorization.

12511258125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6672694 (or 6672679 counting only the distinct ones).

The product of its digits is 8000, while the sum is 33.

Adding to 12511258125 its reverse (52185211521), we get a palindrome (64696469646).

The spelling of 12511258125 in words is "twelve billion, five hundred eleven million, two hundred fifty-eight thousand, one hundred twenty-five".