73449130225 has 27 divisors (see below), whose sum is σ = 92570993697. Its totient is φ = 57810751680.

The previous prime is 73449130177. The next prime is 73449130229. The reversal of 73449130225 is 52203194437.

The square root of 73449130225 is 271015.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 6009195361 + 67439934864 = 77519^2 + 259692^2 .

It is not a de Polignac number, because 73449130225 - 2⁹ = 73449129713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73449130229) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 90789621 + ... + 90790429.

Almost surely, 2^73449130225 is an apocalyptic number.

73449130225 is the 271015-th square number.

73449130225 is the 135508-th centered octagonal number.

It is an amenable number.

73449130225 is a deficient number, since it is larger than the sum of its proper divisors (19121863472).

73449130225 is an frugal number, since it uses more digits than its factorization.

73449130225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762 (or 881 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 73449130225 in words is "seventy-three billion, four hundred forty-nine million, one hundred thirty thousand, two hundred twenty-five".