1786330225 has 27 divisors (see below), whose sum is σ = 2264605707. Its totient is φ = 1397788080.

The previous prime is 1786330219. The next prime is 1786330229. The reversal of 1786330225 is 5220336871.

The square root of 1786330225 is 42265.

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

It can be written as a sum of positive squares in only one way, i.e., 643078881 + 1143251344 = 25359^2 + 33812^2 .

It is not a de Polignac number, because 1786330225 - 2¹³ = 1786322033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1786330229) 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, 16694622 + ... + 16694728.

Almost surely, 2^1786330225 is an apocalyptic number.

1786330225 is the 42265-th square number.

1786330225 is the 21133-rd centered octagonal number.

It is an amenable number.

1786330225 is a deficient number, since it is larger than the sum of its proper divisors (478275482).

1786330225 is an frugal number, since it uses more digits than its factorization.

1786330225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The cubic root of 1786330225 is about 1213.3532252220.

The spelling of 1786330225 in words is "one billion, seven hundred eighty-six million, three hundred thirty thousand, two hundred twenty-five".