20135265 has 16 divisors (see below), whose sum is σ = 32272128. Its totient is φ = 10720256.

The previous prime is 20135263. The next prime is 20135267. The reversal of 20135265 is 56253102.

It is an interprime number because it is at equal distance from previous prime (20135263) and next prime (20135267).

It is a cyclic number.

It is not a de Polignac number, because 20135265 - 2¹ = 20135263 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20135261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15937 + ... + 17153.

It is an arithmetic number, because the mean of its divisors is an integer number (2017008).

Almost surely, 2^20135265 is an apocalyptic number.

It is an amenable number.

20135265 is a deficient number, since it is larger than the sum of its proper divisors (12136863).

20135265 is a wasteful number, since it uses less digits than its factorization.

20135265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 20135265 is about 4487.2335575497. The cubic root of 20135265 is about 272.0523300772.

Adding to 20135265 its reverse (56253102), we get a palindrome (76388367).

The spelling of 20135265 in words is "twenty million, one hundred thirty-five thousand, two hundred sixty-five".