133525213 has 2 divisors, whose sum is σ = 133525214. Its totient is φ = 133525212.

The previous prime is 133525211. The next prime is 133525289. The reversal of 133525213 is 312525331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126832644 + 6692569 = 11262^2 + 2587^2 .

It is a cyclic number.

It is not a de Polignac number, because 133525213 - 2¹ = 133525211 is a prime.

Together with 133525211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133525211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66762606 + 66762607.

It is an arithmetic number, because the mean of its divisors is an integer number (66762607).

Almost surely, 2^133525213 is an apocalyptic number.

It is an amenable number.

133525213 is a deficient number, since it is larger than the sum of its proper divisors (1).

133525213 is an equidigital number, since it uses as much as digits as its factorization.

133525213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 25.

The square root of 133525213 is about 11555.3110299983. The cubic root of 133525213 is about 511.1179027960.

The spelling of 133525213 in words is "one hundred thirty-three million, five hundred twenty-five thousand, two hundred thirteen".