265003136257 has 2 divisors, whose sum is σ = 265003136258. Its totient is φ = 265003136256.

The previous prime is 265003136231. The next prime is 265003136263. The reversal of 265003136257 is 752631300562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253749957696 + 11253178561 = 503736^2 + 106081^2 .

It is a cyclic number.

It is not a de Polignac number, because 265003136257 - 2⁷ = 265003136129 is a prime.

It is a super-2 number, since 2×265003136257² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (265003136357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132501568128 + 132501568129.

It is an arithmetic number, because the mean of its divisors is an integer number (132501568129).

Almost surely, 2^265003136257 is an apocalyptic number.

It is an amenable number.

265003136257 is a deficient number, since it is larger than the sum of its proper divisors (1).

265003136257 is an equidigital number, since it uses as much as digits as its factorization.

265003136257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 40.

The spelling of 265003136257 in words is "two hundred sixty-five billion, three million, one hundred thirty-six thousand, two hundred fifty-seven".