663530125 has 16 divisors (see below), whose sum is σ = 829588032. Its totient is φ = 529861200.

The previous prime is 663530099. The next prime is 663530129. The reversal of 663530125 is 521035366.

663530125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 663530125 - 2⁵ = 663530093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663530129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68854 + ... + 77896.

It is an arithmetic number, because the mean of its divisors is an integer number (51849252).

Almost surely, 2^663530125 is an apocalyptic number.

It is an amenable number.

663530125 is a deficient number, since it is larger than the sum of its proper divisors (166057907).

663530125 is an equidigital number, since it uses as much as digits as its factorization.

663530125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9645 (or 9635 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 663530125 is about 25759.0784967165. The cubic root of 663530125 is about 872.2082997914.

The spelling of 663530125 in words is "six hundred sixty-three million, five hundred thirty thousand, one hundred twenty-five".