263425589 has 16 divisors (see below), whose sum is σ = 312011520. Its totient is φ = 217866096.

The previous prime is 263425583. The next prime is 263425609. The reversal of 263425589 is 985524362.

It is not a de Polignac number, because 263425589 - 2⁴ = 263425573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263425583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169952 + ... + 171494.

It is an arithmetic number, because the mean of its divisors is an integer number (19500720).

Almost surely, 2^263425589 is an apocalyptic number.

263425589 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

263425589 is a deficient number, since it is larger than the sum of its proper divisors (48585931).

263425589 is an frugal number, since it uses more digits than its factorization.

263425589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637 (or 1579 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The square root of 263425589 is about 16230.3909071840. The cubic root of 263425589 is about 641.0412647664.

The spelling of 263425589 in words is "two hundred sixty-three million, four hundred twenty-five thousand, five hundred eighty-nine".