265380887 has 2 divisors, whose sum is σ = 265380888. Its totient is φ = 265380886.

The previous prime is 265380859. The next prime is 265380917. The reversal of 265380887 is 788083562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265380887 - 2¹² = 265376791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265380287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132690443 + 132690444.

It is an arithmetic number, because the mean of its divisors is an integer number (132690444).

Almost surely, 2^265380887 is an apocalyptic number.

265380887 is a deficient number, since it is larger than the sum of its proper divisors (1).

265380887 is an equidigital number, since it uses as much as digits as its factorization.

265380887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 265380887 is about 16290.5152466090. The cubic root of 265380887 is about 642.6234170703.

The spelling of 265380887 in words is "two hundred sixty-five million, three hundred eighty thousand, eight hundred eighty-seven".