133423525 has 24 divisors (see below), whose sum is σ = 170406504. Its totient is φ = 103584000.

The previous prime is 133423513. The next prime is 133423541. The reversal of 133423525 is 525324331.

It can be written as a sum of positive squares in 12 ways, for example, as 736164 + 132687361 = 858^2 + 11519^2 .

It is not a de Polignac number, because 133423525 - 2¹³ = 133415333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133423493 and 133423502.

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 23 ways as a sum of consecutive naturals, for example, 133327 + ... + 134323.

It is an arithmetic number, because the mean of its divisors is an integer number (7100271).

Almost surely, 2^133423525 is an apocalyptic number.

It is an amenable number.

133423525 is a deficient number, since it is larger than the sum of its proper divisors (36982979).

133423525 is a wasteful number, since it uses less digits than its factorization.

133423525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161 (or 1156 counting only the distinct ones).

The product of its digits is 10800, while the sum is 28.

The square root of 133423525 is about 11550.9101373009. The cubic root of 133423525 is about 510.9881201737.

Adding to 133423525 its reverse (525324331), we get a palindrome (658747856).

The spelling of 133423525 in words is "one hundred thirty-three million, four hundred twenty-three thousand, five hundred twenty-five".