64200225520 has 40 divisors (see below), whose sum is σ = 154412616960. Its totient is φ = 24794568960.

The previous prime is 64200225487. The next prime is 64200225539. The reversal of 64200225520 is 2552200246.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 13833936 + ... + 13838575.

It is an arithmetic number, because the mean of its divisors is an integer number (3860315424).

Almost surely, 2^64200225520 is an apocalyptic number.

It is an amenable number.

64200225520 is an abundant number, since it is smaller than the sum of its proper divisors (90212391440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64200225520 is a wasteful number, since it uses less digits than its factorization.

64200225520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27672553 (or 27672547 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 64200225520 its reverse (2552200246), we get a palindrome (66752425766).

The spelling of 64200225520 in words is "sixty-four billion, two hundred million, two hundred twenty-five thousand, five hundred twenty".