164655525 has 24 divisors (see below), whose sum is σ = 272621440. Its totient is φ = 87690240.

The previous prime is 164655521. The next prime is 164655563. The reversal of 164655525 is 525556461.

It is a happy number.

It is not a de Polignac number, because 164655525 - 2² = 164655521 is a prime.

It is a super-2 number, since 2×164655525² = 54222883826051250, 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 (164655521) 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 23 ways as a sum of consecutive naturals, for example, 76869 + ... + 78981.

Almost surely, 2^164655525 is an apocalyptic number.

164655525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164655525 is a deficient number, since it is larger than the sum of its proper divisors (107965915).

164655525 is a wasteful number, since it uses less digits than its factorization.

164655525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3165 (or 3160 counting only the distinct ones).

The product of its digits is 180000, while the sum is 39.

The square root of 164655525 is about 12831.8169017486. The cubic root of 164655525 is about 548.0986966372.

The spelling of 164655525 in words is "one hundred sixty-four million, six hundred fifty-five thousand, five hundred twenty-five".