520125012 has 36 divisors (see below), whose sum is σ = 1434285216. Its totient is φ = 157613520.

The previous prime is 520124993. The next prime is 520125017. The reversal of 520125012 is 210521025.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520125017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 656328 + ... + 657119.

It is an arithmetic number, because the mean of its divisors is an integer number (39841256).

Almost surely, 2^520125012 is an apocalyptic number.

It is an amenable number.

520125012 is an abundant number, since it is smaller than the sum of its proper divisors (914160204).

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

520125012 is a wasteful number, since it uses less digits than its factorization.

520125012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313468 (or 1313463 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 520125012 is about 22806.2494066868. The cubic root of 520125012 is about 804.2095874479.

Adding to 520125012 its reverse (210521025), we get a palindrome (730646037).

The spelling of 520125012 in words is "five hundred twenty million, one hundred twenty-five thousand, twelve".