663625133 has 2 divisors, whose sum is σ = 663625134. Its totient is φ = 663625132.

The previous prime is 663625129. The next prime is 663625159. The reversal of 663625133 is 331526366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 442597444 + 221027689 = 21038^2 + 14867^2 .

It is a cyclic number.

It is not a de Polignac number, because 663625133 - 2² = 663625129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 663625093 and 663625102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663625163) 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 as a sum of consecutive naturals, namely, 331812566 + 331812567.

It is an arithmetic number, because the mean of its divisors is an integer number (331812567).

Almost surely, 2^663625133 is an apocalyptic number.

It is an amenable number.

663625133 is a deficient number, since it is larger than the sum of its proper divisors (1).

663625133 is an equidigital number, since it uses as much as digits as its factorization.

663625133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 35.

The square root of 663625133 is about 25760.9225960562. The cubic root of 663625133 is about 872.2499270455.

The spelling of 663625133 in words is "six hundred sixty-three million, six hundred twenty-five thousand, one hundred thirty-three".