263425 has 12 divisors (see below), whose sum is σ = 335916. Its totient is φ = 204800.

The previous prime is 263423. The next prime is 263429. The reversal of 263425 is 524362.

263425 = 11² + 12² + ... + 92².

It is a happy number.

263425 is nontrivially palindromic in base 2 and base 4.

It can be written as a sum of positive squares in 6 ways, for example, as 2304 + 261121 = 48^2 + 511^2 .

It is not a de Polignac number, because 263425 - 2¹ = 263423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 263396 and 263405.

It is not an unprimeable number, because it can be changed into a prime (263423) 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, 897 + ... + 1153.

It is an arithmetic number, because the mean of its divisors is an integer number (27993).

2²⁶³⁴²⁵ is an apocalyptic number.

263425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

263425 is the 257-th decagonal number.

It is an amenable number.

263425 is a deficient number, since it is larger than the sum of its proper divisors (72491).

263425 is a wasteful number, since it uses less digits than its factorization.

263425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 303 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 263425 is about 513.2494520211. The cubic root of 263425 is about 64.1040786993.

Adding to 263425 its reverse (524362), we get a palindrome (787787).

The spelling of 263425 in words is "two hundred sixty-three thousand, four hundred twenty-five".