4025020445 has 4 divisors (see below), whose sum is σ = 4830024540. Its totient is φ = 3220016352.

The previous prime is 4025020427. The next prime is 4025020463. The reversal of 4025020445 is 5440205204.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4025020427) and next prime (4025020463).

It can be written as a sum of positive squares in 2 ways, for example, as 1781008804 + 2244011641 = 42202^2 + 47371^2 .

It is a cyclic number.

It is not a de Polignac number, because 4025020445 - 2⁶ = 4025020381 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402502040 + ... + 402502049.

It is an arithmetic number, because the mean of its divisors is an integer number (1207506135).

Almost surely, 2^4025020445 is an apocalyptic number.

It is an amenable number.

4025020445 is a deficient number, since it is larger than the sum of its proper divisors (805004095).

4025020445 is an equidigital number, since it uses as much as digits as its factorization.

4025020445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805004094.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 4025020445 is about 63443.0488312155. The cubic root of 4025020445 is about 1590.7039648746.

Adding to 4025020445 its reverse (5440205204), we get a palindrome (9465225649).

The spelling of 4025020445 in words is "four billion, twenty-five million, twenty thousand, four hundred forty-five".