250205424421 has 2 divisors, whose sum is σ = 250205424422. Its totient is φ = 250205424420.

The previous prime is 250205424389. The next prime is 250205424433. The reversal of 250205424421 is 124424502052.

250205424421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212139463396 + 38065961025 = 460586^2 + 195105^2 .

It is a cyclic number.

It is not a de Polignac number, because 250205424421 - 2⁵ = 250205424389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250205424451) 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, 125102712210 + 125102712211.

It is an arithmetic number, because the mean of its divisors is an integer number (125102712211).

Almost surely, 2^250205424421 is an apocalyptic number.

It is an amenable number.

250205424421 is a deficient number, since it is larger than the sum of its proper divisors (1).

250205424421 is an equidigital number, since it uses as much as digits as its factorization.

250205424421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 250205424421 its reverse (124424502052), we get a palindrome (374629926473).

The spelling of 250205424421 in words is "two hundred fifty billion, two hundred five million, four hundred twenty-four thousand, four hundred twenty-one".