633128125 has 48 divisors (see below), whose sum is σ = 916441344. Its totient is φ = 428400000.

The previous prime is 633128123. The next prime is 633128143. The reversal of 633128125 is 521821336.

It is not a de Polignac number, because 633128125 - 2¹ = 633128123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (633128123) 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 47 ways as a sum of consecutive naturals, for example, 2252985 + ... + 2253265.

It is an arithmetic number, because the mean of its divisors is an integer number (19092528).

Almost surely, 2^633128125 is an apocalyptic number.

It is an amenable number.

633128125 is a deficient number, since it is larger than the sum of its proper divisors (283313219).

633128125 is an equidigital number, since it uses as much as digits as its factorization.

633128125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 396 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 633128125 is about 25162.0373777641. The cubic root of 633128125 is about 858.6783941644.

The spelling of 633128125 in words is "six hundred thirty-three million, one hundred twenty-eight thousand, one hundred twenty-five".