133425749 has 2 divisors, whose sum is σ = 133425750. Its totient is φ = 133425748.

The previous prime is 133425713. The next prime is 133425757. The reversal of 133425749 is 947524331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133240849 + 184900 = 11543^2 + 430^2 .

It is a cyclic number.

It is not a de Polignac number, because 133425749 - 2⁸ = 133425493 is a prime.

It is a super-2 number, since 2×133425749² = 35604860992422002, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133425449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66712874 + 66712875.

It is an arithmetic number, because the mean of its divisors is an integer number (66712875).

Almost surely, 2^133425749 is an apocalyptic number.

It is an amenable number.

133425749 is a deficient number, since it is larger than the sum of its proper divisors (1).

133425749 is an equidigital number, since it uses as much as digits as its factorization.

133425749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 133425749 is about 11551.0064063700. The cubic root of 133425749 is about 510.9909593314.

It can be divided in two parts, 13342 and 5749, that added together give a palindrome (19091).

The spelling of 133425749 in words is "one hundred thirty-three million, four hundred twenty-five thousand, seven hundred forty-nine".