12565275077 has 8 divisors (see below), whose sum is σ = 12692532600. Its totient is φ = 12438235584.

The previous prime is 12565275071. The next prime is 12565275083. The reversal of 12565275077 is 77057256521.

It is an interprime number because it is at equal distance from previous prime (12565275071) and next prime (12565275083).

It can be written as a sum of positive squares in 4 ways, for example, as 1004509636 + 11560765441 = 31694^2 + 107521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12565275077 - 2⁶ = 12565275013 is a prime.

It is a super-2 number, since 2×12565275077² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12565275071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62603 + ... + 170439.

It is an arithmetic number, because the mean of its divisors is an integer number (1586566575).

Almost surely, 2^12565275077 is an apocalyptic number.

It is an amenable number.

12565275077 is a deficient number, since it is larger than the sum of its proper divisors (127257523).

12565275077 is a wasteful number, since it uses less digits than its factorization.

12565275077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109015.

The product of its (nonzero) digits is 1029000, while the sum is 47.

The spelling of 12565275077 in words is "twelve billion, five hundred sixty-five million, two hundred seventy-five thousand, seventy-seven".