265555136251 has 2 divisors, whose sum is σ = 265555136252. Its totient is φ = 265555136250.

The previous prime is 265555136183. The next prime is 265555136291. The reversal of 265555136251 is 152631555562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265555136251 - 2⁷ = 265555136123 is a prime.

It is not a weakly prime, because it can be changed into another prime (265555136291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132777568125 + 132777568126.

It is an arithmetic number, because the mean of its divisors is an integer number (132777568126).

Almost surely, 2^265555136251 is an apocalyptic number.

265555136251 is a deficient number, since it is larger than the sum of its proper divisors (1).

265555136251 is an equidigital number, since it uses as much as digits as its factorization.

265555136251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1350000, while the sum is 46.

The spelling of 265555136251 in words is "two hundred sixty-five billion, five hundred fifty-five million, one hundred thirty-six thousand, two hundred fifty-one".