1205504005 has 8 divisors (see below), whose sum is σ = 1447336224. Its totient is φ = 963915600.

The previous prime is 1205503951. The next prime is 1205504057. The reversal of 1205504005 is 5004055021.

1205504005 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1205504005 - 2²⁷ = 1071286277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49891 + ... + 70000.

It is an arithmetic number, because the mean of its divisors is an integer number (180917028).

Almost surely, 2^1205504005 is an apocalyptic number.

It is an amenable number.

1205504005 is a deficient number, since it is larger than the sum of its proper divisors (241832219).

1205504005 is a wasteful number, since it uses less digits than its factorization.

1205504005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121907.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 1205504005 is about 34720.3687336411. The cubic root of 1205504005 is about 1064.2807798776.

Adding to 1205504005 its reverse (5004055021), we get a palindrome (6209559026).

The spelling of 1205504005 in words is "one billion, two hundred five million, five hundred four thousand, five".