63317375725 has 24 divisors (see below), whose sum is σ = 81389263968. Its totient is φ = 48824193600.

The previous prime is 63317375713. The next prime is 63317375749. The reversal of 63317375725 is 52757371336.

It is not a de Polignac number, because 63317375725 - 2²¹ = 63315278573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220891 + ... + 418840.

It is an arithmetic number, because the mean of its divisors is an integer number (3391219332).

Almost surely, 2^63317375725 is an apocalyptic number.

It is an amenable number.

63317375725 is a deficient number, since it is larger than the sum of its proper divisors (18071888243).

63317375725 is a wasteful number, since it uses less digits than its factorization.

63317375725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639885 (or 639880 counting only the distinct ones).

The product of its digits is 2778300, while the sum is 49.

The spelling of 63317375725 in words is "sixty-three billion, three hundred seventeen million, three hundred seventy-five thousand, seven hundred twenty-five".