180331225 has 12 divisors (see below), whose sum is σ = 223785900. Its totient is φ = 144152000.

The previous prime is 180331183. The next prime is 180331231. The reversal of 180331225 is 522133081.

It can be written as a sum of positive squares in 6 ways, for example, as 127449 + 180203776 = 357^2 + 13424^2 .

It is not a de Polignac number, because 180331225 - 2²⁷ = 46113497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 180331225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46875 + ... + 50575.

It is an arithmetic number, because the mean of its divisors is an integer number (18648825).

Almost surely, 2^180331225 is an apocalyptic number.

It is an amenable number.

180331225 is a deficient number, since it is larger than the sum of its proper divisors (43454675).

180331225 is a wasteful number, since it uses less digits than its factorization.

180331225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5660 (or 5655 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 180331225 is about 13428.7462184673. The cubic root of 180331225 is about 564.9677325139.

The spelling of 180331225 in words is "one hundred eighty million, three hundred thirty-one thousand, two hundred twenty-five".