12257565 has 32 divisors (see below), whose sum is σ = 21168000. Its totient is φ = 6036480.

The previous prime is 12257563. The next prime is 12257573. The reversal of 12257565 is 56575221.

12257565 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12257565 - 2¹ = 12257563 is a prime.

It is a super-3 number, since 3×12257565³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12257563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11161 + ... + 12209.

It is an arithmetic number, because the mean of its divisors is an integer number (661500).

Almost surely, 2^12257565 is an apocalyptic number.

12257565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12257565 is a deficient number, since it is larger than the sum of its proper divisors (8910435).

12257565 is a wasteful number, since it uses less digits than its factorization.

12257565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117.

The product of its digits is 21000, while the sum is 33.

The square root of 12257565 is about 3501.0805474882. The cubic root of 12257565 is about 230.5692578320.

The spelling of 12257565 in words is "twelve million, two hundred fifty-seven thousand, five hundred sixty-five".