1265289 has 8 divisors (see below), whose sum is σ = 1732800. Its totient is φ = 820656.

The previous prime is 1265281. The next prime is 1265311. The reversal of 1265289 is 9825621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1265289 - 2³ = 1265281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1265281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5589 + ... + 5810.

It is an arithmetic number, because the mean of its divisors is an integer number (216600).

2^1265289 is an apocalyptic number.

It is an amenable number.

1265289 is a deficient number, since it is larger than the sum of its proper divisors (467511).

1265289 is a wasteful number, since it uses less digits than its factorization.

1265289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11439.

The product of its digits is 8640, while the sum is 33.

The square root of 1265289 is about 1124.8506567540. The cubic root of 1265289 is about 108.1591446620.

The spelling of 1265289 in words is "one million, two hundred sixty-five thousand, two hundred eighty-nine".