12500081445 has 16 divisors (see below), whose sum is σ = 20002282560. Its totient is φ = 6665992704.

The previous prime is 12500081389. The next prime is 12500081449. The reversal of 12500081445 is 54418000521.

It is not a de Polignac number, because 12500081445 - 2¹⁰ = 12500080421 is a prime.

It is a super-2 number, since 2×12500081445² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12500081449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118362 + ... + 197508.

It is an arithmetic number, because the mean of its divisors is an integer number (1250142660).

Almost surely, 2^12500081445 is an apocalyptic number.

12500081445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12500081445 is a deficient number, since it is larger than the sum of its proper divisors (7502201115).

12500081445 is a wasteful number, since it uses less digits than its factorization.

12500081445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89684.

The product of its (nonzero) digits is 6400, while the sum is 30.

Adding to 12500081445 its reverse (54418000521), we get a palindrome (66918081966).

The spelling of 12500081445 in words is "twelve billion, five hundred million, eighty-one thousand, four hundred forty-five".