63663125 has 20 divisors (see below), whose sum is σ = 81733212. Its totient is φ = 49536000.

The previous prime is 63663121. The next prime is 63663133. The reversal of 63663125 is 52136636.

It can be written as a sum of positive squares in 10 ways, for example, as 19280881 + 44382244 = 4391^2 + 6662^2 .

It is not a de Polignac number, because 63663125 - 2² = 63663121 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63663091 and 63663100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63663121) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21749 + ... + 24501.

Almost surely, 2^63663125 is an apocalyptic number.

It is an amenable number.

63663125 is a deficient number, since it is larger than the sum of its proper divisors (18070087).

63663125 is an equidigital number, since it uses as much as digits as its factorization.

63663125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810 (or 2795 counting only the distinct ones).

The product of its digits is 19440, while the sum is 32.

The square root of 63663125 is about 7978.9175330993. The cubic root of 63663125 is about 399.2969420812.

The spelling of 63663125 in words is "sixty-three million, six hundred sixty-three thousand, one hundred twenty-five".