11255609 has 4 divisors (see below), whose sum is σ = 11331300. Its totient is φ = 11179920.

The previous prime is 11255603. The next prime is 11255623. The reversal of 11255609 is 90655211.

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 3258025 + 7997584 = 1805^2 + 2828^2 .

It is a cyclic number.

It is not a de Polignac number, because 11255609 - 2¹⁶ = 11190073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11255603) 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, 37622 + ... + 37919.

It is an arithmetic number, because the mean of its divisors is an integer number (2832825).

Almost surely, 2^11255609 is an apocalyptic number.

It is an amenable number.

11255609 is a deficient number, since it is larger than the sum of its proper divisors (75691).

11255609 is an equidigital number, since it uses as much as digits as its factorization.

11255609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75690.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 11255609 is about 3354.9380024078. The cubic root of 11255609 is about 224.1074699544.

The spelling of 11255609 in words is "eleven million, two hundred fifty-five thousand, six hundred nine".