222405 has 8 divisors (see below), whose sum is σ = 355872. Its totient is φ = 118608.

The previous prime is 222403. The next prime is 222419. The reversal of 222405 is 504222.

222405 is digitally balanced in base 2, 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 222405 - 2¹ = 222403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 14827 = 222405 / (2 + 2 + 2 + 4 + 0 + 5).

It is a Curzon number.

222405 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222403) 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, 7399 + ... + 7428.

It is an arithmetic number, because the mean of its divisors is an integer number (44484).

2²²²⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

222405 is a deficient number, since it is larger than the sum of its proper divisors (133467).

222405 is a wasteful number, since it uses less digits than its factorization.

222405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14835.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 222405 is about 471.5983460531. The cubic root of 222405 is about 60.5872883401.

Adding to 222405 its reverse (504222), we get a palindrome (726627).

The spelling of 222405 in words is "two hundred twenty-two thousand, four hundred five".