12578265 has 48 divisors (see below), whose sum is σ = 25304448. Its totient is φ = 5660928.

The previous prime is 12578239. The next prime is 12578303. The reversal of 12578265 is 56287521.

It is a happy number.

It is not a de Polignac number, because 12578265 - 2⁶ = 12578201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22722 + ... + 23268.

It is an arithmetic number, because the mean of its divisors is an integer number (527176).

Almost surely, 2^12578265 is an apocalyptic number.

12578265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12578265 is an abundant number, since it is smaller than the sum of its proper divisors (12726183).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12578265 is a wasteful number, since it uses less digits than its factorization.

12578265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 635 counting only the distinct ones).

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

The square root of 12578265 is about 3546.5849771294. The cubic root of 12578265 is about 232.5627995465.

The spelling of 12578265 in words is "twelve million, five hundred seventy-eight thousand, two hundred sixty-five".