250105213 has 2 divisors, whose sum is σ = 250105214. Its totient is φ = 250105212.

The previous prime is 250105211. The next prime is 250105217. The reversal of 250105213 is 312501052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248945284 + 1159929 = 15778^2 + 1077^2 .

It is a cyclic number.

It is not a de Polignac number, because 250105213 - 2¹ = 250105211 is a prime.

Together with 250105211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250105211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125052606 + 125052607.

It is an arithmetic number, because the mean of its divisors is an integer number (125052607).

Almost surely, 2^250105213 is an apocalyptic number.

It is an amenable number.

250105213 is a deficient number, since it is larger than the sum of its proper divisors (1).

250105213 is an equidigital number, since it uses as much as digits as its factorization.

250105213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 250105213 is about 15814.7150780531. The cubic root of 250105213 is about 630.0488859352.

Adding to 250105213 its reverse (312501052), we get a palindrome (562606265).

The spelling of 250105213 in words is "two hundred fifty million, one hundred five thousand, two hundred thirteen".