263625839 has 4 divisors (see below), whose sum is σ = 275087856. Its totient is φ = 252163824.

The previous prime is 263625827. The next prime is 263625881. The reversal of 263625839 is 938526362.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 263625839 - 2⁴ = 263625823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 263625839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263625889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5730974 + ... + 5731019.

It is an arithmetic number, because the mean of its divisors is an integer number (68771964).

Almost surely, 2^263625839 is an apocalyptic number.

263625839 is a deficient number, since it is larger than the sum of its proper divisors (11462017).

263625839 is a wasteful number, since it uses less digits than its factorization.

263625839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11462016.

The product of its digits is 466560, while the sum is 44.

The square root of 263625839 is about 16236.5587179057. The cubic root of 263625839 is about 641.2036585059.

The spelling of 263625839 in words is "two hundred sixty-three million, six hundred twenty-five thousand, eight hundred thirty-nine".