164225633 has 16 divisors (see below), whose sum is σ = 194757696. Its totient is φ = 136511040.

The previous prime is 164225617. The next prime is 164225639. The reversal of 164225633 is 336522461.

It is a cyclic number.

It is not a de Polignac number, because 164225633 - 2⁴ = 164225617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164225633.

It is not an unprimeable number, because it can be changed into a prime (164225639) 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 15 ways as a sum of consecutive naturals, for example, 9935 + ... + 20667.

It is an arithmetic number, because the mean of its divisors is an integer number (12172356).

Almost surely, 2^164225633 is an apocalyptic number.

164225633 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

164225633 is a deficient number, since it is larger than the sum of its proper divisors (30532063).

164225633 is a wasteful number, since it uses less digits than its factorization.

164225633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10864.

The product of its digits is 25920, while the sum is 32.

The square root of 164225633 is about 12815.0549355046. The cubic root of 164225633 is about 547.6212784994.

The spelling of 164225633 in words is "one hundred sixty-four million, two hundred twenty-five thousand, six hundred thirty-three".