263825 has 12 divisors (see below), whose sum is σ = 334428. Its totient is φ = 206400.

The previous prime is 263821. The next prime is 263827. The reversal of 263825 is 528362.

It can be written as a sum of positive squares in 6 ways, for example, as 10816 + 253009 = 104^2 + 503^2 .

It is not a de Polignac number, because 263825 - 2² = 263821 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 263794 and 263803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1439 + ... + 1611.

It is an arithmetic number, because the mean of its divisors is an integer number (27869).

2²⁶³⁸²⁵ is an apocalyptic number.

263825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

263825 is a deficient number, since it is larger than the sum of its proper divisors (70603).

263825 is a wasteful number, since it uses less digits than its factorization.

263825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 239 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 263825 is about 513.6389782717. The cubic root of 263825 is about 64.1365087569.

The spelling of 263825 in words is "two hundred sixty-three thousand, eight hundred twenty-five".