265620163 has 2 divisors, whose sum is σ = 265620164. Its totient is φ = 265620162.

The previous prime is 265620161. The next prime is 265620167. The reversal of 265620163 is 361026562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265620163 - 2¹ = 265620161 is a prime.

Together with 265620161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (265620161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132810081 + 132810082.

It is an arithmetic number, because the mean of its divisors is an integer number (132810082).

Almost surely, 2^265620163 is an apocalyptic number.

265620163 is a deficient number, since it is larger than the sum of its proper divisors (1).

265620163 is an equidigital number, since it uses as much as digits as its factorization.

265620163 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 31.

The square root of 265620163 is about 16297.8576199450. The cubic root of 265620163 is about 642.8164957463.

The spelling of 265620163 in words is "two hundred sixty-five million, six hundred twenty thousand, one hundred sixty-three".