63725434689 has 8 divisors (see below), whose sum is σ = 97105424320. Its totient is φ = 36414534096.

The previous prime is 63725434687. The next prime is 63725434733. The reversal of 63725434689 is 98643452736.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63725434689 - 2¹ = 63725434687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63725434687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1517272234 + ... + 1517272275.

It is an arithmetic number, because the mean of its divisors is an integer number (12138178040).

Almost surely, 2^63725434689 is an apocalyptic number.

It is an amenable number.

63725434689 is a deficient number, since it is larger than the sum of its proper divisors (33379989631).

63725434689 is a wasteful number, since it uses less digits than its factorization.

63725434689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3034544519.

The product of its digits is 26127360, while the sum is 57.

The spelling of 63725434689 in words is "sixty-three billion, seven hundred twenty-five million, four hundred thirty-four thousand, six hundred eighty-nine".