12758265 has 48 divisors (see below), whose sum is σ = 24150672. Its totient is φ = 6193152.

The previous prime is 12758237. The next prime is 12758269. The reversal of 12758265 is 56285721.

12758265 = 155² + 156² + ... + 347².

It is a happy number.

12758265 is a `hidden beast` number, since 12 + 7 + 582 + 65 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 5645376 + 7112889 = 2376^2 + 2667^2 .

It is not a de Polignac number, because 12758265 - 2⁵ = 12758233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12758269) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 66009 + ... + 66201.

It is an arithmetic number, because the mean of its divisors is an integer number (503139).

Almost surely, 2^12758265 is an apocalyptic number.

12758265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12758265 is a deficient number, since it is larger than the sum of its proper divisors (11392407).

12758265 is a wasteful number, since it uses less digits than its factorization.

12758265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 327 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 12758265 is about 3571.8713582659. The cubic root of 12758265 is about 233.6669049873. Note that the first 3 decimals are identical.

The spelling of 12758265 in words is "twelve million, seven hundred fifty-eight thousand, two hundred sixty-five".