12545122540 has 12 divisors (see below), whose sum is σ = 26344757376. Its totient is φ = 5018049008.

The previous prime is 12545122531. The next prime is 12545122543. The reversal of 12545122540 is 4522154521.

It is not an unprimeable number, because it can be changed into a prime (12545122543) 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, 313628044 + ... + 313628083.

It is an arithmetic number, because the mean of its divisors is an integer number (2195396448).

Almost surely, 2^12545122540 is an apocalyptic number.

12545122540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12545122540 is an abundant number, since it is smaller than the sum of its proper divisors (13799634836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12545122540 is a wasteful number, since it uses less digits than its factorization.

12545122540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627256136 (or 627256134 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 12545122540 in words is "twelve billion, five hundred forty-five million, one hundred twenty-two thousand, five hundred forty".