263855825 has 12 divisors (see below), whose sum is σ = 329145600. Its totient is φ = 209817360.

The previous prime is 263855819. The next prime is 263855857. The reversal of 263855825 is 528558362.

It is not a de Polignac number, because 263855825 - 2¹² = 263851729 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 27425 + ... + 35774.

It is an arithmetic number, because the mean of its divisors is an integer number (27428800).

Almost surely, 2^263855825 is an apocalyptic number.

263855825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

263855825 is a deficient number, since it is larger than the sum of its proper divisors (65289775).

263855825 is a wasteful number, since it uses less digits than its factorization.

263855825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63376 (or 63371 counting only the distinct ones).

The product of its digits is 576000, while the sum is 44.

The square root of 263855825 is about 16243.6395244416. The cubic root of 263855825 is about 641.3900653752.

The spelling of 263855825 in words is "two hundred sixty-three million, eight hundred fifty-five thousand, eight hundred twenty-five".