180742825 has 6 divisors (see below), whose sum is σ = 224121134. Its totient is φ = 144594240.

The previous prime is 180742813. The next prime is 180742829. The reversal of 180742825 is 528247081.

It can be written as a sum of positive squares in 3 ways, for example, as 3400336 + 177342489 = 1844^2 + 13317^2 .

It is a de Polignac number, because none of the positive numbers 2^k-180742825 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180742829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3614832 + ... + 3614881.

Almost surely, 2^180742825 is an apocalyptic number.

It is an amenable number.

180742825 is a deficient number, since it is larger than the sum of its proper divisors (43378309).

180742825 is an equidigital number, since it uses as much as digits as its factorization.

180742825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7229723 (or 7229718 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 180742825 is about 13444.0628159794. The cubic root of 180742825 is about 565.3972458914.

The spelling of 180742825 in words is "one hundred eighty million, seven hundred forty-two thousand, eight hundred twenty-five".