259252791797 has 4 divisors (see below), whose sum is σ = 259452679596. Its totient is φ = 259052904000.

The previous prime is 259252791781. The next prime is 259252791817. The reversal of 259252791797 is 797197252952.

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

It can be written as a sum of positive squares in 2 ways, for example, as 255347291761 + 3905500036 = 505319^2 + 62494^2 .

It is a cyclic number.

It is not a de Polignac number, because 259252791797 - 2⁴ = 259252791781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259252791097) 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 3 ways as a sum of consecutive naturals, for example, 99941954 + ... + 99944547.

It is an arithmetic number, because the mean of its divisors is an integer number (64863169899).

Almost surely, 2^259252791797 is an apocalyptic number.

It is an amenable number.

259252791797 is a deficient number, since it is larger than the sum of its proper divisors (199887799).

259252791797 is a wasteful number, since it uses less digits than its factorization.

259252791797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199887798.

The product of its digits is 50009400, while the sum is 65.

The spelling of 259252791797 in words is "two hundred fifty-nine billion, two hundred fifty-two million, seven hundred ninety-one thousand, seven hundred ninety-seven".