1001265 has 8 divisors (see below), whose sum is σ = 1602048. Its totient is φ = 534000.

The previous prime is 1001237. The next prime is 1001267. The reversal of 1001265 is 5621001.

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

It is not a de Polignac number, because 1001265 - 2¹¹ = 999217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 66751 = 1001265 / (1 + 0 + 0 + 1 + 2 + 6 + 5).

It is a Curzon number.

1001265 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1001267) 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 7 ways as a sum of consecutive naturals, for example, 33361 + ... + 33390.

It is an arithmetic number, because the mean of its divisors is an integer number (200256).

2^1001265 is an apocalyptic number.

1001265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1001265 is a deficient number, since it is larger than the sum of its proper divisors (600783).

1001265 is an equidigital number, since it uses as much as digits as its factorization.

1001265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66759.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1001265 is about 1000.6323000983. The cubic root of 1001265 is about 100.0421488989.

Adding to 1001265 its reverse (5621001), we get a palindrome (6622266).

The spelling of 1001265 in words is "one million, one thousand, two hundred sixty-five".