12725409461 has 4 divisors (see below), whose sum is σ = 12726106092. Its totient is φ = 12724712832.

The previous prime is 12725409451. The next prime is 12725409491. The reversal of 12725409461 is 16490452721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16490452721 = 56123 ⋅293827.

It can be written as a sum of positive squares in 2 ways, for example, as 10018808836 + 2706600625 = 100094^2 + 52025^2 .

It is a cyclic number.

It is not a de Polignac number, because 12725409461 - 2²⁶ = 12658300597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12725409451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320156 + ... + 357701.

It is an arithmetic number, because the mean of its divisors is an integer number (3181526523).

Almost surely, 2^12725409461 is an apocalyptic number.

It is an amenable number.

12725409461 is a deficient number, since it is larger than the sum of its proper divisors (696631).

12725409461 is an equidigital number, since it uses as much as digits as its factorization.

12725409461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696630.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 12725409461 in words is "twelve billion, seven hundred twenty-five million, four hundred nine thousand, four hundred sixty-one".