265405103 has 2 divisors, whose sum is σ = 265405104. Its totient is φ = 265405102.

The previous prime is 265405051. The next prime is 265405109. The reversal of 265405103 is 301504562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265405103 - 2⁸ = 265404847 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265405109) by changing a digit.

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 as a sum of consecutive naturals, namely, 132702551 + 132702552.

It is an arithmetic number, because the mean of its divisors is an integer number (132702552).

Almost surely, 2^265405103 is an apocalyptic number.

265405103 is a deficient number, since it is larger than the sum of its proper divisors (1).

265405103 is an equidigital number, since it uses as much as digits as its factorization.

265405103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 265405103 is about 16291.2584842301. The cubic root of 265405103 is about 642.6429629332.

Adding to 265405103 its reverse (301504562), we get a palindrome (566909665).

The spelling of 265405103 in words is "two hundred sixty-five million, four hundred five thousand, one hundred three".