258933125861 has 2 divisors, whose sum is σ = 258933125862. Its totient is φ = 258933125860.

The previous prime is 258933125837. The next prime is 258933125887. The reversal of 258933125861 is 168521339852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161679584836 + 97253541025 = 402094^2 + 311855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258933125861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258933125261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129466562930 + 129466562931.

It is an arithmetic number, because the mean of its divisors is an integer number (129466562931).

Almost surely, 2^258933125861 is an apocalyptic number.

It is an amenable number.

258933125861 is a deficient number, since it is larger than the sum of its proper divisors (1).

258933125861 is an equidigital number, since it uses as much as digits as its factorization.

258933125861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 53.

The spelling of 258933125861 in words is "two hundred fifty-eight billion, nine hundred thirty-three million, one hundred twenty-five thousand, eight hundred sixty-one".