1275885 has 32 divisors (see below), whose sum is σ = 2446080. Its totient is φ = 627264.

The previous prime is 1275877. The next prime is 1275889. The reversal of 1275885 is 5885721.

It is not a de Polignac number, because 1275885 - 2³ = 1275877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275889) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1392 + ... + 2118.

It is an arithmetic number, because the mean of its divisors is an integer number (76440).

2^1275885 is an apocalyptic number.

1275885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1275885 is a deficient number, since it is larger than the sum of its proper divisors (1170195).

1275885 is a wasteful number, since it uses less digits than its factorization.

1275885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754 (or 748 counting only the distinct ones).

The product of its digits is 22400, while the sum is 36.

The square root of 1275885 is about 1129.5507956706. The cubic root of 1275885 is about 108.4602273756.

The spelling of 1275885 in words is "one million, two hundred seventy-five thousand, eight hundred eighty-five".