164166525 has 36 divisors (see below), whose sum is σ = 306834528. Its totient is φ = 83746080.

The previous prime is 164166487. The next prime is 164166529. The reversal of 164166525 is 525661461.

164166525 is a `hidden beast` number, since 1 + 641 + 6 + 6 + 5 + 2 + 5 = 666.

It is not a de Polignac number, because 164166525 - 2⁶ = 164166461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164166525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164166529) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10687 + ... + 21036.

Almost surely, 2^164166525 is an apocalyptic number.

164166525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164166525 is a deficient number, since it is larger than the sum of its proper divisors (142668003).

164166525 is a wasteful number, since it uses less digits than its factorization.

164166525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31762 (or 31754 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 164166525 is about 12812.7485341749. The cubic root of 164166525 is about 547.5555707653. Note that the first 4 decimals are identical.

The spelling of 164166525 in words is "one hundred sixty-four million, one hundred sixty-six thousand, five hundred twenty-five".