20265269 has 2 divisors, whose sum is σ = 20265270. Its totient is φ = 20265268.

The previous prime is 20265253. The next prime is 20265299. The reversal of 20265269 is 96256202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13965169 + 6300100 = 3737^2 + 2510^2 .

It is a cyclic number.

It is not a de Polignac number, because 20265269 - 2⁴ = 20265253 is a prime.

It is a super-2 number, since 2×20265269² = 821362255284722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20265299) 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 as a sum of consecutive naturals, namely, 10132634 + 10132635.

It is an arithmetic number, because the mean of its divisors is an integer number (10132635).

Almost surely, 2^20265269 is an apocalyptic number.

It is an amenable number.

20265269 is a deficient number, since it is larger than the sum of its proper divisors (1).

20265269 is an equidigital number, since it uses as much as digits as its factorization.

20265269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 20265269 is about 4501.6962358649. The cubic root of 20265269 is about 272.6365794029.

The spelling of 20265269 in words is "twenty million, two hundred sixty-five thousand, two hundred sixty-nine".