445165625 has 12 divisors (see below), whose sum is σ = 556425324. Its totient is φ = 356130000.

The previous prime is 445165601. The next prime is 445165663. The reversal of 445165625 is 526561544.

It can be written as a sum of positive squares in 6 ways, for example, as 226924096 + 218241529 = 15064^2 + 14773^2 .

It is a de Polignac number, because none of the positive numbers 2^k-445165625 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68102 + ... + 74351.

It is an arithmetic number, because the mean of its divisors is an integer number (46368777).

Almost surely, 2^445165625 is an apocalyptic number.

It is an amenable number.

445165625 is a deficient number, since it is larger than the sum of its proper divisors (111259699).

445165625 is an frugal number, since it uses more digits than its factorization.

445165625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142478 (or 142458 counting only the distinct ones).

The product of its digits is 144000, while the sum is 38.

The square root of 445165625 is about 21098.9484335120. The cubic root of 445165625 is about 763.5553781338. Note that the first 3 decimals are identical.

The spelling of 445165625 in words is "four hundred forty-five million, one hundred sixty-five thousand, six hundred twenty-five".