12565260612 has 18 divisors (see below), whose sum is σ = 31762186638. Its totient is φ = 4188420192.

The previous prime is 12565260553. The next prime is 12565260613. The reversal of 12565260612 is 21606256521.

12565260612 is a `hidden beast` number, since 12 + 5 + 6 + 5 + 26 + 0 + 612 = 666.

12565260612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11165303556 + 1399957056 = 105666^2 + 37416^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×12565260612² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 349035017 = 12565260612 / (1 + 2 + 5 + 6 + 5 + 2 + 6 + 0 + 6 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (12565260613) 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 5 ways as a sum of consecutive naturals, for example, 174517473 + ... + 174517544.

Almost surely, 2^12565260612 is an apocalyptic number.

12565260612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12565260612 is an abundant number, since it is smaller than the sum of its proper divisors (19196926026).

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

12565260612 is a wasteful number, since it uses less digits than its factorization.

12565260612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349035027 (or 349035022 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 12565260612 in words is "twelve billion, five hundred sixty-five million, two hundred sixty thousand, six hundred twelve".