12500000125 has 16 divisors (see below), whose sum is σ = 16517650032. Its totient is φ = 9411763200.

The previous prime is 12500000101. The next prime is 12500000143. The reversal of 12500000125 is 52100000521.

It can be written as a sum of positive squares in 8 ways, for example, as 1163287449 + 11336712676 = 34107^2 + 106474^2 .

It is not a de Polignac number, because 12500000125 - 2³¹ = 10352516477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12500000099 and 12500000108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2939052 + ... + 2943301.

It is an arithmetic number, because the mean of its divisors is an integer number (1032353127).

Almost surely, 2^12500000125 is an apocalyptic number.

It is an amenable number.

12500000125 is a deficient number, since it is larger than the sum of its proper divisors (4017649907).

12500000125 is an equidigital number, since it uses as much as digits as its factorization.

12500000125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882385 (or 5882375 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

Adding to 12500000125 its reverse (52100000521), we get a palindrome (64600000646).

The spelling of 12500000125 in words is "twelve billion, five hundred million, one hundred twenty-five", and thus it is an aban number.