12511251240 has 32 divisors (see below), whose sum is σ = 37533754080. Its totient is φ = 3336333632.

The previous prime is 12511251227. The next prime is 12511251241. The reversal of 12511251240 is 4215211521.

It is a happy number.

12511251240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12511251240.

It is not an unprimeable number, because it can be changed into a prime (12511251241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52130094 + ... + 52130333.

It is an arithmetic number, because the mean of its divisors is an integer number (1172929815).

Almost surely, 2^12511251240 is an apocalyptic number.

12511251240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12511251240 is an abundant number, since it is smaller than the sum of its proper divisors (25022502840).

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

12511251240 is a wasteful number, since it uses less digits than its factorization.

12511251240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104260441 (or 104260437 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

Adding to 12511251240 its reverse (4215211521), we get a palindrome (16726462761).

The spelling of 12511251240 in words is "twelve billion, five hundred eleven million, two hundred fifty-one thousand, two hundred forty".