259163540 has 48 divisors (see below), whose sum is σ = 583293312. Its totient is φ = 96471936.

The previous prime is 259163497. The next prime is 259163573. The reversal of 259163540 is 45361952.

259163540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 259163540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9407 + ... + 24633.

It is an arithmetic number, because the mean of its divisors is an integer number (12151944).

Almost surely, 2^259163540 is an apocalyptic number.

259163540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 259163540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291646656).

259163540 is an abundant number, since it is smaller than the sum of its proper divisors (324129772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

259163540 is a wasteful number, since it uses less digits than its factorization.

259163540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15296 (or 15294 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 259163540 is about 16098.5570781980. The cubic root of 259163540 is about 637.5652446359.

The spelling of 259163540 in words is "two hundred fifty-nine million, one hundred sixty-three thousand, five hundred forty".