164225605 has 8 divisors (see below), whose sum is σ = 198623232. Its totient is φ = 130345488.

The previous prime is 164225591. The next prime is 164225609. The reversal of 164225605 is 506522461.

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 164225605 - 2⁹ = 164225093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164225609) by changing a digit.

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, 128677 + ... + 129946.

It is an arithmetic number, because the mean of its divisors is an integer number (24827904).

Almost surely, 2^164225605 is an apocalyptic number.

It is an amenable number.

164225605 is a deficient number, since it is larger than the sum of its proper divisors (34397627).

164225605 is a wasteful number, since it uses less digits than its factorization.

164225605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258755.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 164225605 is about 12815.0538430394. The cubic root of 164225605 is about 547.6212473768.

The spelling of 164225605 in words is "one hundred sixty-four million, two hundred twenty-five thousand, six hundred five".