12565567 has 16 divisors (see below), whose sum is σ = 15869952. Its totient is φ = 9694080.

The previous prime is 12565561. The next prime is 12565603. The reversal of 12565567 is 76556521.

It is not a de Polignac number, because 12565567 - 2¹⁹ = 12041279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12565561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442 + ... + 5032.

It is an arithmetic number, because the mean of its divisors is an integer number (991872).

Almost surely, 2^12565567 is an apocalyptic number.

12565567 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12565567 is a deficient number, since it is larger than the sum of its proper divisors (3304385).

12565567 is a wasteful number, since it uses less digits than its factorization.

12565567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4638.

The product of its digits is 63000, while the sum is 37.

The square root of 12565567 is about 3544.7943522862. The cubic root of 12565567 is about 232.4845143268.

The spelling of 12565567 in words is "twelve million, five hundred sixty-five thousand, five hundred sixty-seven".