1265885 has 8 divisors (see below), whose sum is σ = 1568256. Its totient is φ = 979920.

The previous prime is 1265867. The next prime is 1265899. The reversal of 1265885 is 5885621.

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 1265885 - 2¹² = 1261789 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3929 + ... + 4238.

It is an arithmetic number, because the mean of its divisors is an integer number (196032).

2^1265885 is an apocalyptic number.

It is an amenable number.

1265885 is a deficient number, since it is larger than the sum of its proper divisors (302371).

1265885 is an equidigital number, since it uses as much as digits as its factorization.

1265885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8203.

The product of its digits is 19200, while the sum is 35.

The square root of 1265885 is about 1125.1155496215. The cubic root of 1265885 is about 108.1761243748.

The spelling of 1265885 in words is "one million, two hundred sixty-five thousand, eight hundred eighty-five".