259425 has 18 divisors (see below), whose sum is σ = 465062. Its totient is φ = 138240.

The previous prime is 259421. The next prime is 259429. The reversal of 259425 is 524952.

It is an interprime number because it is at equal distance from previous prime (259421) and next prime (259429).

It can be written as a sum of positive squares in 3 ways, for example, as 40401 + 219024 = 201^2 + 468^2 .

It is not a de Polignac number, because 259425 - 2² = 259421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 352 + ... + 801.

2²⁵⁹⁴²⁵ is an apocalyptic number.

259425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

259425 is a deficient number, since it is larger than the sum of its proper divisors (205637).

259425 is a wasteful number, since it uses less digits than its factorization.

259425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169 (or 1161 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 259425 is about 509.3378053905. The cubic root of 259425 is about 63.7779577488. Note that the first 3 decimals are identical.

The spelling of 259425 in words is "two hundred fifty-nine thousand, four hundred twenty-five".