63725057138 has 8 divisors (see below), whose sum is σ = 95595580080. Its totient is φ = 31859863780.

The previous prime is 63725057131. The next prime is 63725057161. The reversal of 63725057138 is 83175052736.

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

It is a junction number, because it is equal to n+sod(n) for n = 63725057092 and 63725057101.

It is not an unprimeable number, because it can be changed into a prime (63725057131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1302368 + ... + 1350411.

It is an arithmetic number, because the mean of its divisors is an integer number (11949447510).

Almost surely, 2^63725057138 is an apocalyptic number.

63725057138 is a deficient number, since it is larger than the sum of its proper divisors (31870522942).

63725057138 is a wasteful number, since it uses less digits than its factorization.

63725057138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664792.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 63725057138 in words is "sixty-three billion, seven hundred twenty-five million, fifty-seven thousand, one hundred thirty-eight".