265435152557 has 2 divisors, whose sum is σ = 265435152558. Its totient is φ = 265435152556.

The previous prime is 265435152491. The next prime is 265435152571. The reversal of 265435152557 is 755251534562.

265435152557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251782164841 + 13652987716 = 501779^2 + 116846^2 .

It is a cyclic number.

It is not a de Polignac number, because 265435152557 - 2³² = 261140185261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265435152457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132717576278 + 132717576279.

It is an arithmetic number, because the mean of its divisors is an integer number (132717576279).

Almost surely, 2^265435152557 is an apocalyptic number.

It is an amenable number.

265435152557 is a deficient number, since it is larger than the sum of its proper divisors (1).

265435152557 is an equidigital number, since it uses as much as digits as its factorization.

265435152557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300000, while the sum is 50.

The spelling of 265435152557 in words is "two hundred sixty-five billion, four hundred thirty-five million, one hundred fifty-two thousand, five hundred fifty-seven".