133525265 has 4 divisors (see below), whose sum is σ = 160230324. Its totient is φ = 106820208.

The previous prime is 133525213. The next prime is 133525289. The reversal of 133525265 is 562525331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96668224 + 36857041 = 9832^2 + 6071^2 .

It is a cyclic number.

It is not a de Polignac number, because 133525265 - 2¹⁸ = 133263121 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 13352522 + ... + 13352531.

It is an arithmetic number, because the mean of its divisors is an integer number (40057581).

Almost surely, 2^133525265 is an apocalyptic number.

It is an amenable number.

133525265 is a deficient number, since it is larger than the sum of its proper divisors (26705059).

133525265 is an equidigital number, since it uses as much as digits as its factorization.

133525265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26705058.

The product of its digits is 27000, while the sum is 32.

The square root of 133525265 is about 11555.3132800457. The cubic root of 133525265 is about 511.1179691459.

The spelling of 133525265 in words is "one hundred thirty-three million, five hundred twenty-five thousand, two hundred sixty-five".