1265895 has 16 divisors (see below), whose sum is σ = 2250720. Its totient is φ = 675072.

The previous prime is 1265867. The next prime is 1265899. The reversal of 1265895 is 5985621.

It is a happy number.

It is not a de Polignac number, because 1265895 - 2⁵ = 1265863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265899) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4554 + ... + 4823.

It is an arithmetic number, because the mean of its divisors is an integer number (140670).

2^1265895 is an apocalyptic number.

1265895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1265895 is a deficient number, since it is larger than the sum of its proper divisors (984825).

1265895 is an equidigital number, since it uses as much as digits as its factorization.

1265895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9391 (or 9385 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 1265895 is about 1125.1199936007. The cubic root of 1265895 is about 108.1764092238.

The spelling of 1265895 in words is "one million, two hundred sixty-five thousand, eight hundred ninety-five".