1255009 has 4 divisors (see below), whose sum is σ = 1434304. Its totient is φ = 1075716.

The previous prime is 1254997. The next prime is 1255013. The reversal of 1255009 is 9005521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9005521 = 7 ⋅1286503.

It is a cyclic number.

It is not a de Polignac number, because 1255009 - 2⁹ = 1254497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255039) 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, 89637 + ... + 89650.

It is an arithmetic number, because the mean of its divisors is an integer number (358576).

2^1255009 is an apocalyptic number.

It is an amenable number.

1255009 is a deficient number, since it is larger than the sum of its proper divisors (179295).

1255009 is an equidigital number, since it uses as much as digits as its factorization.

1255009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179294.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 1255009 is about 1120.2718420098. The cubic root of 1255009 is about 107.8654302445.

The spelling of 1255009 in words is "one million, two hundred fifty-five thousand, nine".