259212561 has 16 divisors (see below), whose sum is σ = 353850240. Its totient is φ = 168739200.

The previous prime is 259212539. The next prime is 259212563. The reversal of 259212561 is 165212952.

259212561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 259212561 - 2¹¹ = 259210513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (259212563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16260 + ... + 27978.

It is an arithmetic number, because the mean of its divisors is an integer number (22115640).

Almost surely, 2^259212561 is an apocalyptic number.

It is an amenable number.

259212561 is a deficient number, since it is larger than the sum of its proper divisors (94637679).

259212561 is a wasteful number, since it uses less digits than its factorization.

259212561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11896.

The product of its digits is 10800, while the sum is 33.

The square root of 259212561 is about 16100.0795339650. The cubic root of 259212561 is about 637.6054407678.

It can be divided in two parts, 25921 and 2561, that added together give a palindrome (28482).

The spelling of 259212561 in words is "two hundred fifty-nine million, two hundred twelve thousand, five hundred sixty-one".