263616625 has 16 divisors (see below), whose sum is σ = 329621760. Its totient is φ = 210490800.

The previous prime is 263616623. The next prime is 263616629. The reversal of 263616625 is 526616362.

It is not a de Polignac number, because 263616625 - 2¹ = 263616623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (263616623) 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, 75672 + ... + 79078.

It is an arithmetic number, because the mean of its divisors is an integer number (20601360).

Almost surely, 2^263616625 is an apocalyptic number.

263616625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

263616625 is a deficient number, since it is larger than the sum of its proper divisors (66005135).

263616625 is an equidigital number, since it uses as much as digits as its factorization.

263616625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041 (or 4031 counting only the distinct ones).

The product of its digits is 77760, while the sum is 37.

The square root of 263616625 is about 16236.2749730349. The cubic root of 263616625 is about 641.1961881717.

The spelling of 263616625 in words is "two hundred sixty-three million, six hundred sixteen thousand, six hundred twenty-five".