164056725 has 48 divisors (see below), whose sum is σ = 344442240. Its totient is φ = 74995200.

The previous prime is 164056699. The next prime is 164056727. The reversal of 164056725 is 527650461.

It is a happy number.

164056725 is a `hidden beast` number, since 1 + 640 + 5 + 6 + 7 + 2 + 5 = 666.

It is not a de Polignac number, because 164056725 - 2⁶ = 164056661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164056725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164056727) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12636 + ... + 22085.

It is an arithmetic number, because the mean of its divisors is an integer number (7175880).

Almost surely, 2^164056725 is an apocalyptic number.

164056725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164056725 is an abundant number, since it is smaller than the sum of its proper divisors (180385515).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164056725 is a wasteful number, since it uses less digits than its factorization.

164056725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34747 (or 34736 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 164056725 is about 12808.4630225488. The cubic root of 164056725 is about 547.4334691159.

The spelling of 164056725 in words is "one hundred sixty-four million, fifty-six thousand, seven hundred twenty-five".