259502381 has 2 divisors, whose sum is σ = 259502382. Its totient is φ = 259502380.

The previous prime is 259502279. The next prime is 259502389. The reversal of 259502381 is 183205952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259499881 + 2500 = 16109^2 + 50^2 .

It is a cyclic number.

It is not a de Polignac number, because 259502381 - 2²⁶ = 192393517 is a prime.

It is a super-2 number, since 2×259502381² = 134682971489338322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259502389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129751190 + 129751191.

It is an arithmetic number, because the mean of its divisors is an integer number (129751191).

Almost surely, 2^259502381 is an apocalyptic number.

It is an amenable number.

259502381 is a deficient number, since it is larger than the sum of its proper divisors (1).

259502381 is an equidigital number, since it uses as much as digits as its factorization.

259502381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 259502381 is about 16109.0775961878. The cubic root of 259502381 is about 637.8429832447.

The spelling of 259502381 in words is "two hundred fifty-nine million, five hundred two thousand, three hundred eighty-one".