64442463056225 has 12 divisors (see below), whose sum is σ = 79942701409584. Its totient is φ = 51532004496720.

The previous prime is 64442463056219. The next prime is 64442463056267. The reversal of 64442463056225 is 52265036424446.

64442463056225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64442463056225 - 2¹⁴ = 64442463039841 is a prime.

It is a super-2 number, since 2×64442463056225² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 549088859 + ... + 549206208.

It is an arithmetic number, because the mean of its divisors is an integer number (6661891784132).

Almost surely, 2^{64442463056225} is an apocalyptic number.

It is an amenable number.

64442463056225 is a deficient number, since it is larger than the sum of its proper divisors (15500238353359).

64442463056225 is a wasteful number, since it uses less digits than its factorization.

64442463056225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098297424 (or 1098297419 counting only the distinct ones).

The product of its (nonzero) digits is 33177600, while the sum is 53.

The spelling of 64442463056225 in words is "sixty-four trillion, four hundred forty-two billion, four hundred sixty-three million, fifty-six thousand, two hundred twenty-five".