12528475420 has 24 divisors (see below), whose sum is σ = 26338158000. Its totient is φ = 5005988352.

The previous prime is 12528475403. The next prime is 12528475441. The reversal of 12528475420 is 2457482521.

It is a happy number.

12528475420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 318570 + ... + 355729.

It is an arithmetic number, because the mean of its divisors is an integer number (1097423250).

Almost surely, 2^12528475420 is an apocalyptic number.

12528475420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12528475420 is an abundant number, since it is smaller than the sum of its proper divisors (13809682580).

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

12528475420 is a wasteful number, since it uses less digits than its factorization.

12528475420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675237 (or 675235 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 40.

It can be divided in two parts, 125284 and 75420, that added together give a square (200704 = 448²).

The spelling of 12528475420 in words is "twelve billion, five hundred twenty-eight million, four hundred seventy-five thousand, four hundred twenty".