225685465009536 has 64 divisors (see below), whose sum is σ = 685116590215680. Its totient is φ = 64481561430528.

The previous prime is 225685465009513. The next prime is 225685465009541. The reversal of 225685465009536 is 635900564586522.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 41980180536 + ... + 41980185911.

It is an arithmetic number, because the mean of its divisors is an integer number (10704946722120).

Almost surely, 2^{225685465009536} is an apocalyptic number.

It is an amenable number.

225685465009536 is an abundant number, since it is smaller than the sum of its proper divisors (459431125206144).

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

225685465009536 is an equidigital number, since it uses as much as digits as its factorization.

225685465009536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83960366471 (or 83960366459 counting only the distinct ones).

The product of its (nonzero) digits is 466560000, while the sum is 66.

The spelling of 225685465009536 in words is "two hundred twenty-five trillion, six hundred eighty-five billion, four hundred sixty-five million, nine thousand, five hundred thirty-six".