259130026 has 4 divisors (see below), whose sum is σ = 388695042. Its totient is φ = 129565012.

The previous prime is 259130021. The next prime is 259130077. The reversal of 259130026 is 620031952.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 217592001 + 41538025 = 14751^2 + 6445^2 .

It is a junction number, because it is equal to n+sod(n) for n = 259129976 and 259130003.

It is not an unprimeable number, because it can be changed into a prime (259130021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64782505 + ... + 64782508.

Almost surely, 2^259130026 is an apocalyptic number.

259130026 is a deficient number, since it is larger than the sum of its proper divisors (129565016).

259130026 is a wasteful number, since it uses less digits than its factorization.

259130026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129565015.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 259130026 is about 16097.5161438031. The cubic root of 259130026 is about 637.5377609825.

Adding to 259130026 its reverse (620031952), we get a palindrome (879161978).

The spelling of 259130026 in words is "two hundred fifty-nine million, one hundred thirty thousand, twenty-six".