259224557881 has 15 divisors (see below), whose sum is σ = 265556785615. Its totient is φ = 253043077000.

The previous prime is 259224557863. The next prime is 259224557923. The reversal of 259224557881 is 188755422952.

It is a happy number.

The square root of 259224557881 is 509141.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 249059885481 + 10164672400 = 499059^2 + 100820^2 .

It is not a de Polignac number, because 259224557881 - 2⁵ = 259224557849 is a prime.

It is a super-2 number, since 2×259224557881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259224557821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2566579731 + ... + 2566579831.

Almost surely, 2^259224557881 is an apocalyptic number.

259224557881 is the 509141-st square number.

259224557881 is the 254571-st centered octagonal number.

It is an amenable number.

259224557881 is a deficient number, since it is larger than the sum of its proper divisors (6332227734).

259224557881 is an frugal number, since it uses more digits than its factorization.

259224557881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 172 counting only the distinct ones).

The product of its digits is 16128000, while the sum is 58.

The spelling of 259224557881 in words is "two hundred fifty-nine billion, two hundred twenty-four million, five hundred fifty-seven thousand, eight hundred eighty-one".