250443057421 has 2 divisors, whose sum is σ = 250443057422. Its totient is φ = 250443057420.

The previous prime is 250443057419. The next prime is 250443057457. The reversal of 250443057421 is 124750344052.

250443057421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161274528100 + 89168529321 = 401590^2 + 298611^2 .

It is a cyclic number.

It is not a de Polignac number, because 250443057421 - 2¹ = 250443057419 is a prime.

Together with 250443057419, 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 (250443057521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125221528710 + 125221528711.

It is an arithmetic number, because the mean of its divisors is an integer number (125221528711).

Almost surely, 2^250443057421 is an apocalyptic number.

It is an amenable number.

250443057421 is a deficient number, since it is larger than the sum of its proper divisors (1).

250443057421 is an equidigital number, since it uses as much as digits as its factorization.

250443057421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 37.

The spelling of 250443057421 in words is "two hundred fifty billion, four hundred forty-three million, fifty-seven thousand, four hundred twenty-one".