12665265 has 8 divisors (see below), whose sum is σ = 20264448. Its totient is φ = 6754800.

The previous prime is 12665243. The next prime is 12665293. The reversal of 12665265 is 56256621.

It is a happy number.

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

It is not a de Polignac number, because 12665265 - 2¹⁶ = 12599729 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422161 + ... + 422190.

It is an arithmetic number, because the mean of its divisors is an integer number (2533056).

Almost surely, 2^12665265 is an apocalyptic number.

12665265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12665265 is a deficient number, since it is larger than the sum of its proper divisors (7599183).

12665265 is an equidigital number, since it uses as much as digits as its factorization.

12665265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844359.

The product of its digits is 21600, while the sum is 33.

The square root of 12665265 is about 3558.8291613956. The cubic root of 12665265 is about 233.0977565693.

The spelling of 12665265 in words is "twelve million, six hundred sixty-five thousand, two hundred sixty-five".