12265565 has 8 divisors (see below), whose sum is σ = 15850968. Its totient is φ = 9057600.

The previous prime is 12265523. The next prime is 12265573. The reversal of 12265565 is 56556221.

12265565 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1229881 + 11035684 = 1109^2 + 3322^2 .

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

It is not a de Polignac number, because 12265565 - 2¹⁰ = 12264541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94286 + ... + 94415.

It is an arithmetic number, because the mean of its divisors is an integer number (1981371).

Almost surely, 2^12265565 is an apocalyptic number.

It is an amenable number.

12265565 is a deficient number, since it is larger than the sum of its proper divisors (3585403).

12265565 is a wasteful number, since it uses less digits than its factorization.

12265565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188719.

The product of its digits is 18000, while the sum is 32.

The square root of 12265565 is about 3502.2228655527. Note that the first 3 decimals coincide. The cubic root of 12265565 is about 230.6194078936.

The spelling of 12265565 in words is "twelve million, two hundred sixty-five thousand, five hundred sixty-five".