258550270421 has 2 divisors, whose sum is σ = 258550270422. Its totient is φ = 258550270420.

The previous prime is 258550270357. The next prime is 258550270423. The reversal of 258550270421 is 124072055852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137428869796 + 121121400625 = 370714^2 + 348025^2 .

It is a cyclic number.

It is not a de Polignac number, because 258550270421 - 2⁶ = 258550270357 is a prime.

Together with 258550270423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258550270423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129275135210 + 129275135211.

It is an arithmetic number, because the mean of its divisors is an integer number (129275135211).

Almost surely, 2^258550270421 is an apocalyptic number.

It is an amenable number.

258550270421 is a deficient number, since it is larger than the sum of its proper divisors (1).

258550270421 is an equidigital number, since it uses as much as digits as its factorization.

258550270421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224000, while the sum is 41.

The spelling of 258550270421 in words is "two hundred fifty-eight billion, five hundred fifty million, two hundred seventy thousand, four hundred twenty-one".