12546408125 has 10 divisors (see below), whose sum is σ = 15677992374. Its totient is φ = 10037126000.

The previous prime is 12546408103. The next prime is 12546408137. The reversal of 12546408125 is 52180464521.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 5577998596 + 6968409529 = 74686^2 + 83477^2 .

It is not a de Polignac number, because 12546408125 - 2²⁸ = 12277972669 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 9 ways as a sum of consecutive naturals, for example, 10036502 + ... + 10037751.

Almost surely, 2^12546408125 is an apocalyptic number.

It is an amenable number.

12546408125 is a deficient number, since it is larger than the sum of its proper divisors (3131584249).

12546408125 is an frugal number, since it uses more digits than its factorization.

12546408125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20074273 (or 20074258 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 38.

The spelling of 12546408125 in words is "twelve billion, five hundred forty-six million, four hundred eight thousand, one hundred twenty-five".