2405205 has 48 divisors (see below), whose sum is σ = 4694976. Its totient is φ = 1128960.

The previous prime is 2405203. The next prime is 2405209. The reversal of 2405205 is 5025042.

2405205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2405205 - 2¹ = 2405203 is a prime.

It is a super-2 number, since 2×2405205² = 11570022184050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2405203) 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 47 ways as a sum of consecutive naturals, for example, 21229 + ... + 21341.

It is an arithmetic number, because the mean of its divisors is an integer number (97812).

2^2405205 is an apocalyptic number.

It is an amenable number.

2405205 is a deficient number, since it is larger than the sum of its proper divisors (2289771).

2405205 is a wasteful number, since it uses less digits than its factorization.

2405205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 2405205 is about 1550.8723351714. The cubic root of 2405205 is about 133.9833089777.

It can be divided in two parts, 240 and 5205, that added together give a palindrome (5445).

The spelling of 2405205 in words is "two million, four hundred five thousand, two hundred five".