4028171625 has 24 divisors (see below), whose sum is σ = 7261452744. Its totient is φ = 2148357600.

The previous prime is 4028171599. The next prime is 4028171647. The reversal of 4028171625 is 5261718204.

4028171625 is a `hidden beast` number, since 4 + 0 + 28 + 1 + 7 + 1 + 625 = 666.

4028171625 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 20142144 + 4008029481 = 4488^2 + 63309^2 .

It is not a de Polignac number, because 4028171625 - 2¹¹ = 4028169577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4028171625.

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 23 ways as a sum of consecutive naturals, for example, 1789174 + ... + 1791423.

It is an arithmetic number, because the mean of its divisors is an integer number (302560531).

Almost surely, 2^4028171625 is an apocalyptic number.

4028171625 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4028171625 is a deficient number, since it is larger than the sum of its proper divisors (3233281119).

4028171625 is a wasteful number, since it uses less digits than its factorization.

4028171625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580618 (or 3580605 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 4028171625 is about 63467.8786867814. The cubic root of 4028171625 is about 1591.1189761804.

Adding to 4028171625 its reverse (5261718204), we get a palindrome (9289889829).

The spelling of 4028171625 in words is "four billion, twenty-eight million, one hundred seventy-one thousand, six hundred twenty-five".