263647625 has 16 divisors (see below), whose sum is σ = 329951232. Its totient is φ = 210329200.

The previous prime is 263647619. The next prime is 263647627. The reversal of 263647625 is 526746362.

It is not a de Polignac number, because 263647625 - 2⁸ = 263647369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263647627) 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, 45122 + ... + 50628.

It is an arithmetic number, because the mean of its divisors is an integer number (20621952).

Almost surely, 2^263647625 is an apocalyptic number.

263647625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

263647625 is a deficient number, since it is larger than the sum of its proper divisors (66303607).

263647625 is an equidigital number, since it uses as much as digits as its factorization.

263647625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5905 (or 5895 counting only the distinct ones).

The product of its digits is 362880, while the sum is 41.

The square root of 263647625 is about 16237.2295974406. The cubic root of 263647625 is about 641.2213210109.

The spelling of 263647625 in words is "two hundred sixty-three million, six hundred forty-seven thousand, six hundred twenty-five".