4425555644 has 24 divisors (see below), whose sum is σ = 7959264768. Its totient is φ = 2151558720.

The previous prime is 4425555619. The next prime is 4425555653. The reversal of 4425555644 is 4465555244.

It is a junction number, because it is equal to n+sod(n) for n = 4425555595 and 4425555604.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 237134 + ... + 255114.

It is an arithmetic number, because the mean of its divisors is an integer number (331636032).

Almost surely, 2^4425555644 is an apocalyptic number.

It is an amenable number.

4425555644 is a deficient number, since it is larger than the sum of its proper divisors (3533709124).

4425555644 is a wasteful number, since it uses less digits than its factorization.

4425555644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19685 (or 19683 counting only the distinct ones).

The product of its digits is 1920000, while the sum is 44.

The square root of 4425555644 is about 66524.8498232052. The cubic root of 4425555644 is about 1641.8088860182.

It can be divided in two parts, 44255 and 55644, that added together give a palindrome (99899).

The spelling of 4425555644 in words is "four billion, four hundred twenty-five million, five hundred fifty-five thousand, six hundred forty-four".