63725257003 has 4 divisors (see below), whose sum is σ = 65207239768. Its totient is φ = 62243274240.

The previous prime is 63725256971. The next prime is 63725257009. The reversal of 63725257003 is 30075252736.

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 63725257003 - 2⁵ = 63725256971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63725257009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 740991318 + ... + 740991403.

It is an arithmetic number, because the mean of its divisors is an integer number (16301809942).

Almost surely, 2^63725257003 is an apocalyptic number.

63725257003 is a deficient number, since it is larger than the sum of its proper divisors (1481982765).

63725257003 is a wasteful number, since it uses less digits than its factorization.

63725257003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481982764.

The product of its (nonzero) digits is 264600, while the sum is 40.

The spelling of 63725257003 in words is "sixty-three billion, seven hundred twenty-five million, two hundred fifty-seven thousand, three".