133443525 has 12 divisors (see below), whose sum is σ = 220626752. Its totient is φ = 71169840.

The previous prime is 133443511. The next prime is 133443533. The reversal of 133443525 is 525344331.

It is not a de Polignac number, because 133443525 - 2⁴ = 133443509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133443492 and 133443501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 889549 + ... + 889698.

Almost surely, 2^133443525 is an apocalyptic number.

133443525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133443525 is a deficient number, since it is larger than the sum of its proper divisors (87183227).

133443525 is a wasteful number, since it uses less digits than its factorization.

133443525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779260 (or 1779255 counting only the distinct ones).

The product of its digits is 21600, while the sum is 30.

The square root of 133443525 is about 11551.7758375065. The cubic root of 133443525 is about 511.0136510332.

Adding to 133443525 its reverse (525344331), we get a palindrome (658787856).

The spelling of 133443525 in words is "one hundred thirty-three million, four hundred forty-three thousand, five hundred twenty-five".