129225133 has 2 divisors, whose sum is σ = 129225134. Its totient is φ = 129225132.

The previous prime is 129225121. The next prime is 129225197. The reversal of 129225133 is 331522921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71267364 + 57957769 = 8442^2 + 7613^2 .

It is a cyclic number.

It is not a de Polignac number, because 129225133 - 2⁹ = 129224621 is a prime.

It is a super-4 number, since 4×129225133⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129225233) 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, 64612566 + 64612567.

It is an arithmetic number, because the mean of its divisors is an integer number (64612567).

Almost surely, 2^129225133 is an apocalyptic number.

It is an amenable number.

129225133 is a deficient number, since it is larger than the sum of its proper divisors (1).

129225133 is an equidigital number, since it uses as much as digits as its factorization.

129225133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 28.

The square root of 129225133 is about 11367.7232988844. The cubic root of 129225133 is about 505.5712034891.

The spelling of 129225133 in words is "one hundred twenty-nine million, two hundred twenty-five thousand, one hundred thirty-three".