12500610989 has 4 divisors (see below), whose sum is σ = 12705539100. Its totient is φ = 12295682880.

The previous prime is 12500610977. The next prime is 12500611001. The reversal of 12500610989 is 98901600521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98901600521 = 4987 ⋅19831883.

It is an interprime number because it is at equal distance from previous prime (12500610977) and next prime (12500611001).

It can be written as a sum of positive squares in 2 ways, for example, as 1615236100 + 10885374889 = 40190^2 + 104333^2 .

It is a cyclic number.

It is not a de Polignac number, because 12500610989 - 2⁴ = 12500610973 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12500610919) 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, 102463964 + ... + 102464085.

It is an arithmetic number, because the mean of its divisors is an integer number (3176384775).

Almost surely, 2^12500610989 is an apocalyptic number.

It is an amenable number.

12500610989 is a deficient number, since it is larger than the sum of its proper divisors (204928111).

12500610989 is an equidigital number, since it uses as much as digits as its factorization.

12500610989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204928110.

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 12500610989 in words is "twelve billion, five hundred million, six hundred ten thousand, nine hundred eighty-nine".