133411525 has 12 divisors (see below), whose sum is σ = 178156132. Its totient is φ = 98519040.

The previous prime is 133411519. The next prime is 133411543. The reversal of 133411525 is 525114331.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 33431524 + 99980001 = 5782^2 + 9999^2 .

It is not a de Polignac number, because 133411525 - 2³ = 133411517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133411525.

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, 204924 + ... + 205573.

Almost surely, 2^133411525 is an apocalyptic number.

It is an amenable number.

133411525 is a deficient number, since it is larger than the sum of its proper divisors (44744607).

133411525 is a wasteful number, since it uses less digits than its factorization.

133411525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410520 (or 410515 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 133411525 is about 11550.3906860331. The cubic root of 133411525 is about 510.9728004334.

Adding to 133411525 its reverse (525114331), we get a palindrome (658525856).

The spelling of 133411525 in words is "one hundred thirty-three million, four hundred eleven thousand, five hundred twenty-five".