4221644551025 has 96 divisors (see below), whose sum is σ = 6130857600000. Its totient is φ = 2851127251200.

The previous prime is 4221644550989. The next prime is 4221644551027. The reversal of 4221644551025 is 5201554461224.

It is not a de Polignac number, because 4221644551025 - 2⁶ = 4221644550961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4221644551027) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 107568356 + ... + 107607594.

It is an arithmetic number, because the mean of its divisors is an integer number (63863100000).

Almost surely, 2^{4221644551025} is an apocalyptic number.

It is an amenable number.

4221644551025 is a deficient number, since it is larger than the sum of its proper divisors (1909213048975).

4221644551025 is a wasteful number, since it uses less digits than its factorization.

4221644551025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39687 (or 39682 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 41.

The spelling of 4221644551025 in words is "four trillion, two hundred twenty-one billion, six hundred forty-four million, five hundred fifty-one thousand, twenty-five".