63503725 has 12 divisors (see below), whose sum is σ = 79632180. Its totient is φ = 50230400.

The previous prime is 63503689. The next prime is 63503731. The reversal of 63503725 is 52730536.

It can be written as a sum of positive squares in 6 ways, for example, as 11634921 + 51868804 = 3411^2 + 7202^2 .

It is not a de Polignac number, because 63503725 - 2⁹ = 63503213 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 12046 + ... + 16495.

It is an arithmetic number, because the mean of its divisors is an integer number (6636015).

Almost surely, 2^63503725 is an apocalyptic number.

It is an amenable number.

63503725 is a deficient number, since it is larger than the sum of its proper divisors (16128455).

63503725 is a wasteful number, since it uses less digits than its factorization.

63503725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28640 (or 28635 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 31.

The square root of 63503725 is about 7968.9224491144. The cubic root of 63503725 is about 398.9634097722.

The spelling of 63503725 in words is "sixty-three million, five hundred three thousand, seven hundred twenty-five".