1275265 has 4 divisors (see below), whose sum is σ = 1530324. Its totient is φ = 1020208.

The previous prime is 1275227. The next prime is 1275269. The reversal of 1275265 is 5625721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 628849 + 646416 = 793^2 + 804^2 .

It is a cyclic number.

It is not a de Polignac number, because 1275265 - 2¹⁷ = 1144193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1275269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127522 + ... + 127531.

It is an arithmetic number, because the mean of its divisors is an integer number (382581).

2^1275265 is an apocalyptic number.

It is an amenable number.

1275265 is a deficient number, since it is larger than the sum of its proper divisors (255059).

1275265 is an equidigital number, since it uses as much as digits as its factorization.

1275265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255058.

The product of its digits is 4200, while the sum is 28.

The square root of 1275265 is about 1129.2763169393. The cubic root of 1275265 is about 108.4426562423.

It can be divided in two parts, 1275 and 265, that added together give a triangular number (1540 = T₅₅).

The spelling of 1275265 in words is "one million, two hundred seventy-five thousand, two hundred sixty-five".