642063321225425 has 12 divisors (see below), whose sum is σ = 868536565439856. Its totient is φ = 466955142709200.

The previous prime is 642063321225383. The next prime is 642063321225533. The reversal of 642063321225425 is 524522123360246.

It is a happy number.

It is not a de Polignac number, because 642063321225425 - 2¹⁰ = 642063321224401 is a prime.

It is a super-3 number, since 3×642063321225425³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 642063321225425.

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, 1167387856499 + ... + 1167387857048.

It is an arithmetic number, because the mean of its divisors is an integer number (72378047119988).

Almost surely, 2^{642063321225425} is an apocalyptic number.

It is an amenable number.

642063321225425 is a deficient number, since it is larger than the sum of its proper divisors (226473244214431).

642063321225425 is a wasteful number, since it uses less digits than its factorization.

642063321225425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334775713568 (or 2334775713563 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 47.

The spelling of 642063321225425 in words is "six hundred forty-two trillion, sixty-three billion, three hundred twenty-one million, two hundred twenty-five thousand, four hundred twenty-five".