133225249 has 2 divisors, whose sum is σ = 133225250. Its totient is φ = 133225248.

The previous prime is 133225229. The next prime is 133225289. The reversal of 133225249 is 942522331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129960000 + 3265249 = 11400^2 + 1807^2 .

It is an emirp because it is prime and its reverse (942522331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133225249 - 2²¹ = 131128097 is a prime.

It is a super-2 number, since 2×133225249² = 35497933942224002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 133225249.

It is not a weakly prime, because it can be changed into another prime (133225229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66612624 + 66612625.

It is an arithmetic number, because the mean of its divisors is an integer number (66612625).

Almost surely, 2^133225249 is an apocalyptic number.

It is an amenable number.

133225249 is a deficient number, since it is larger than the sum of its proper divisors (1).

133225249 is an equidigital number, since it uses as much as digits as its factorization.

133225249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 133225249 is about 11542.3242460087. The cubic root of 133225249 is about 510.7348742045.

The spelling of 133225249 in words is "one hundred thirty-three million, two hundred twenty-five thousand, two hundred forty-nine".