133502225 has 24 divisors (see below), whose sum is σ = 173259000. Its totient is φ = 101911040.

The previous prime is 133502209. The next prime is 133502233. The reversal of 133502225 is 522205331.

It can be written as a sum of positive squares in 12 ways, for example, as 78978769 + 54523456 = 8887^2 + 7384^2 .

It is not a de Polignac number, because 133502225 - 2⁴ = 133502209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133502225.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63491 + ... + 65559.

It is an arithmetic number, because the mean of its divisors is an integer number (7219125).

Almost surely, 2^133502225 is an apocalyptic number.

It is an amenable number.

133502225 is a deficient number, since it is larger than the sum of its proper divisors (39756775).

133502225 is a wasteful number, since it uses less digits than its factorization.

133502225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197 (or 2192 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 133502225 is about 11554.3162930569. The cubic root of 133502225 is about 511.0885693780.

Adding to 133502225 its reverse (522205331), we get a palindrome (655707556).

The spelling of 133502225 in words is "one hundred thirty-three million, five hundred two thousand, two hundred twenty-five".