4425554421 has 8 divisors (see below), whose sum is σ = 6556376960. Its totient is φ = 2950369596.

The previous prime is 4425554377. The next prime is 4425554443. The reversal of 4425554421 is 1244555244.

4425554421 is a `hidden beast` number, since 4 + 42 + 55 + 544 + 21 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-4425554421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4425554491) by changing a digit.

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, 81954685 + ... + 81954738.

It is an arithmetic number, because the mean of its divisors is an integer number (819547120).

Almost surely, 2^4425554421 is an apocalyptic number.

It is an amenable number.

4425554421 is a deficient number, since it is larger than the sum of its proper divisors (2130822539).

4425554421 is a wasteful number, since it uses less digits than its factorization.

4425554421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163909432 (or 163909426 counting only the distinct ones).

The product of its digits is 128000, while the sum is 36.

The square root of 4425554421 is about 66524.8406311507. The cubic root of 4425554421 is about 1641.8087347805.

The spelling of 4425554421 in words is "four billion, four hundred twenty-five million, five hundred fifty-four thousand, four hundred twenty-one".