33125749 has 2 divisors, whose sum is σ = 33125750. Its totient is φ = 33125748.

The previous prime is 33125731. The next prime is 33125779. The reversal of 33125749 is 94752133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20295025 + 12830724 = 4505^2 + 3582^2 .

It is a cyclic number.

It is not a de Polignac number, because 33125749 - 2⁵ = 33125717 is a prime.

It is a super-2 number, since 2×33125749² = 2194630493622002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33125779) 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, 16562874 + 16562875.

It is an arithmetic number, because the mean of its divisors is an integer number (16562875).

Almost surely, 2^33125749 is an apocalyptic number.

It is an amenable number.

33125749 is a deficient number, since it is larger than the sum of its proper divisors (1).

33125749 is an equidigital number, since it uses as much as digits as its factorization.

33125749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 33125749 is about 5755.4972852048. The cubic root of 33125749 is about 321.1603350114.

The spelling of 33125749 in words is "thirty-three million, one hundred twenty-five thousand, seven hundred forty-nine".