265431254563 has 2 divisors, whose sum is σ = 265431254564. Its totient is φ = 265431254562.

The previous prime is 265431254537. The next prime is 265431254603. The reversal of 265431254563 is 365452134562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265431254563 - 2⁹ = 265431254051 is a prime.

It is not a weakly prime, because it can be changed into another prime (265431254503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132715627281 + 132715627282.

It is an arithmetic number, because the mean of its divisors is an integer number (132715627282).

Almost surely, 2^265431254563 is an apocalyptic number.

265431254563 is a deficient number, since it is larger than the sum of its proper divisors (1).

265431254563 is an equidigital number, since it uses as much as digits as its factorization.

265431254563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592000, while the sum is 46.

The spelling of 265431254563 in words is "two hundred sixty-five billion, four hundred thirty-one million, two hundred fifty-four thousand, five hundred sixty-three".