12125042544 has 20 divisors (see below), whose sum is σ = 31323026696. Its totient is φ = 4041680832.

The previous prime is 12125042507. The next prime is 12125042557. The reversal of 12125042544 is 44524052121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126302479 + ... + 126302574.

Almost surely, 2^12125042544 is an apocalyptic number.

It is an amenable number.

12125042544 is an abundant number, since it is smaller than the sum of its proper divisors (19197984152).

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

12125042544 is a wasteful number, since it uses less digits than its factorization.

12125042544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252605064 (or 252605058 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 12125042544 its reverse (44524052121), we get a palindrome (56649094665).

The spelling of 12125042544 in words is "twelve billion, one hundred twenty-five million, forty-two thousand, five hundred forty-four".