63725055715 has 4 divisors (see below), whose sum is σ = 76470066864. Its totient is φ = 50980044568.

The previous prime is 63725055659. The next prime is 63725055727. The reversal of 63725055715 is 51755052736.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63725055715 - 2⁷ = 63725055587 is a prime.

It is a super-2 number, since 2×63725055715² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6372505567 + ... + 6372505576.

It is an arithmetic number, because the mean of its divisors is an integer number (19117516716).

Almost surely, 2^63725055715 is an apocalyptic number.

63725055715 is a deficient number, since it is larger than the sum of its proper divisors (12745011149).

63725055715 is a wasteful number, since it uses less digits than its factorization.

63725055715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12745011148.

The product of its (nonzero) digits is 1102500, while the sum is 46.

The spelling of 63725055715 in words is "sixty-three billion, seven hundred twenty-five million, fifty-five thousand, seven hundred fifteen".