2205705509 has 8 divisors (see below), whose sum is σ = 2521118208. Its totient is φ = 1890370800.

The previous prime is 2205705503. The next prime is 2205705529. The reversal of 2205705509 is 9055075022.

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

It is a cyclic number.

It is not a de Polignac number, because 2205705509 - 2¹² = 2205701413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205705503) 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, 66284 + ... + 93834.

It is an arithmetic number, because the mean of its divisors is an integer number (315139776).

Almost surely, 2^2205705509 is an apocalyptic number.

It is an amenable number.

2205705509 is a deficient number, since it is larger than the sum of its proper divisors (315412699).

2205705509 is a wasteful number, since it uses less digits than its factorization.

2205705509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38995.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 2205705509 is about 46964.9391461333. The cubic root of 2205705509 is about 1301.7147999715.

The spelling of 2205705509 in words is "two billion, two hundred five million, seven hundred five thousand, five hundred nine".