133555325 has 12 divisors (see below), whose sum is σ = 167879508. Its totient is φ = 105379200.

The previous prime is 133555309. The next prime is 133555339. The reversal of 133555325 is 523555331.

It can be written as a sum of positive squares in 6 ways, for example, as 7150276 + 126405049 = 2674^2 + 11243^2 .

It is not a de Polignac number, because 133555325 - 2⁴ = 133555309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 133555291 and 133555300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34766 + ... + 38415.

It is an arithmetic number, because the mean of its divisors is an integer number (13989959).

Almost surely, 2^133555325 is an apocalyptic number.

It is an amenable number.

133555325 is a deficient number, since it is larger than the sum of its proper divisors (34324183).

133555325 is an equidigital number, since it uses as much as digits as its factorization.

133555325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73264 (or 73259 counting only the distinct ones).

The product of its digits is 33750, while the sum is 32.

The square root of 133555325 is about 11556.6139071962. The cubic root of 133555325 is about 511.1563215714.

The spelling of 133555325 in words is "one hundred thirty-three million, five hundred fifty-five thousand, three hundred twenty-five".