263440543401325 has 24 divisors (see below), whose sum is σ = 331543888770528. Its totient is φ = 207605624297280.

The previous prime is 263440543401317. The next prime is 263440543401331. The reversal of 263440543401325 is 523104345044362.

It is not a de Polignac number, because 263440543401325 - 2³ = 263440543401317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 358557039 + ... + 359291011.

It is an arithmetic number, because the mean of its divisors is an integer number (13814328698772).

Almost surely, 2^{263440543401325} is an apocalyptic number.

263440543401325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

263440543401325 is a deficient number, since it is larger than the sum of its proper divisors (68103345369203).

263440543401325 is a wasteful number, since it uses less digits than its factorization.

263440543401325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948333 (or 948328 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 46.

Adding to 263440543401325 its reverse (523104345044362), we get a palindrome (786544888445687).

The spelling of 263440543401325 in words is "two hundred sixty-three trillion, four hundred forty billion, five hundred forty-three million, four hundred one thousand, three hundred twenty-five".