12625137639 has 12 divisors (see below), whose sum is σ = 18294576976. Its totient is φ = 8389865952.

The previous prime is 12625137607. The next prime is 12625137647. The reversal of 12625137639 is 93673152621.

12625137639 is a `hidden beast` number, since 1 + 2 + 6 + 2 + 5 + 1 + 3 + 7 + 639 = 666.

It is not a de Polignac number, because 12625137639 - 2⁵ = 12625137607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12625137594 and 12625137603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12625137649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2238067 + ... + 2243700.

Almost surely, 2^12625137639 is an apocalyptic number.

12625137639 is a deficient number, since it is larger than the sum of its proper divisors (5669439337).

12625137639 is a wasteful number, since it uses less digits than its factorization.

12625137639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4482086 (or 4482083 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The spelling of 12625137639 in words is "twelve billion, six hundred twenty-five million, one hundred thirty-seven thousand, six hundred thirty-nine".