445430025 has 18 divisors (see below), whose sum is σ = 797815070. Its totient is φ = 237562560.

The previous prime is 445430009. The next prime is 445430047. The reversal of 445430025 is 520034544.

It can be written as a sum of positive squares in 3 ways, for example, as 101364624 + 344065401 = 10068^2 + 18549^2 .

It is not a de Polignac number, because 445430025 - 2⁴ = 445430009 is a prime.

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 17 ways as a sum of consecutive naturals, for example, 989620 + ... + 990069.

Almost surely, 2^445430025 is an apocalyptic number.

445430025 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

445430025 is a deficient number, since it is larger than the sum of its proper divisors (352385045).

445430025 is a wasteful number, since it uses less digits than its factorization.

445430025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979705 (or 1979697 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 445430025 is about 21105.2132185392. The cubic root of 445430025 is about 763.7065159539.

Adding to 445430025 its reverse (520034544), we get a palindrome (965464569).

The spelling of 445430025 in words is "four hundred forty-five million, four hundred thirty thousand, twenty-five".