12565471 has 2 divisors, whose sum is σ = 12565472. Its totient is φ = 12565470.

The previous prime is 12565463. The next prime is 12565481. The reversal of 12565471 is 17456521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12565471 - 2³ = 12565463 is a prime.

It is a super-3 number, since 3×12565471³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12565481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6282735 + 6282736.

It is an arithmetic number, because the mean of its divisors is an integer number (6282736).

Almost surely, 2^12565471 is an apocalyptic number.

12565471 is a deficient number, since it is larger than the sum of its proper divisors (1).

12565471 is an equidigital number, since it uses as much as digits as its factorization.

12565471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 31.

The square root of 12565471 is about 3544.7808112773. The cubic root of 12565471 is about 232.4839222705.

The spelling of 12565471 in words is "twelve million, five hundred sixty-five thousand, four hundred seventy-one".