265431254561 has 16 divisors (see below), whose sum is σ = 290501691648. Its totient is φ = 240518678400.

The previous prime is 265431254537. The next prime is 265431254563. The reversal of 265431254561 is 165452134562.

It is not a de Polignac number, because 265431254561 - 2¹⁸ = 265430992417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265431254563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4744331 + ... + 4799951.

It is an arithmetic number, because the mean of its divisors is an integer number (18156355728).

Almost surely, 2^265431254561 is an apocalyptic number.

It is an amenable number.

265431254561 is a deficient number, since it is larger than the sum of its proper divisors (25070437087).

265431254561 is a wasteful number, since it uses less digits than its factorization.

265431254561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57032.

The product of its digits is 864000, while the sum is 44.

The spelling of 265431254561 in words is "two hundred sixty-five billion, four hundred thirty-one million, two hundred fifty-four thousand, five hundred sixty-one".