12565014712020 has 120 divisors (see below), whose sum is σ = 40776120693000. Its totient is φ = 3235130212608.

The previous prime is 12565014712001. The next prime is 12565014712021. The reversal of 12565014712020 is 2021741056521.

12565014712020 is a `hidden beast` number, since 1 + 2 + 5 + 6 + 501 + 4 + 7 + 120 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3977559561924 + 8587455150096 = 1994382^2 + 2930436^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12565014712021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 133680295 + ... + 133774254.

It is an arithmetic number, because the mean of its divisors is an integer number (339801005775).

Almost surely, 2^{12565014712020} is an apocalyptic number.

12565014712020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12565014712020 is an abundant number, since it is smaller than the sum of its proper divisors (28211105980980).

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

12565014712020 is a wasteful number, since it uses less digits than its factorization.

12565014712020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267454599 (or 267454588 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

Adding to 12565014712020 its reverse (2021741056521), we get a palindrome (14586755768541).

The spelling of 12565014712020 in words is "twelve trillion, five hundred sixty-five billion, fourteen million, seven hundred twelve thousand, twenty".