63421826325 has 72 divisors (see below), whose sum is σ = 124122618144. Its totient is φ = 28384540800.

The previous prime is 63421826297. The next prime is 63421826329. The reversal of 63421826325 is 52362812436.

It is a happy number.

It is not a de Polignac number, because 63421826325 - 2⁷ = 63421826197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63421826329) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 150819 + ... + 386768.

It is an arithmetic number, because the mean of its divisors is an integer number (1723925252).

Almost surely, 2^63421826325 is an apocalyptic number.

63421826325 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

63421826325 is a deficient number, since it is larger than the sum of its proper divisors (60700791819).

63421826325 is a wasteful number, since it uses less digits than its factorization.

63421826325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537635 (or 537619 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The spelling of 63421826325 in words is "sixty-three billion, four hundred twenty-one million, eight hundred twenty-six thousand, three hundred twenty-five".