133525289 has 2 divisors, whose sum is σ = 133525290. Its totient is φ = 133525288.

The previous prime is 133525213. The next prime is 133525291. The reversal of 133525289 is 982525331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86025625 + 47499664 = 9275^2 + 6892^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133525289 is a prime.

Together with 133525291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133524289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66762644 + 66762645.

It is an arithmetic number, because the mean of its divisors is an integer number (66762645).

Almost surely, 2^133525289 is an apocalyptic number.

It is an amenable number.

133525289 is a deficient number, since it is larger than the sum of its proper divisors (1).

133525289 is an equidigital number, since it uses as much as digits as its factorization.

133525289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 38.

The square root of 133525289 is about 11555.3143185289. The cubic root of 133525289 is about 511.1179997689.

The spelling of 133525289 in words is "one hundred thirty-three million, five hundred twenty-five thousand, two hundred eighty-nine".