180725664 has 48 divisors (see below), whose sum is σ = 542179008. Its totient is φ = 51635712.

The previous prime is 180725653. The next prime is 180725711. The reversal of 180725664 is 466527081.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

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, 133797 + ... + 135140.

It is an arithmetic number, because the mean of its divisors is an integer number (11295396).

Almost surely, 2^180725664 is an apocalyptic number.

180725664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

180725664 is an abundant number, since it is smaller than the sum of its proper divisors (361453344).

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

180725664 is a wasteful number, since it uses less digits than its factorization.

180725664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268957 (or 268949 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 180725664 is about 13443.4245637040. The cubic root of 180725664 is about 565.3793510561.

The spelling of 180725664 in words is "one hundred eighty million, seven hundred twenty-five thousand, six hundred sixty-four".