250741650421 has 2 divisors, whose sum is σ = 250741650422. Its totient is φ = 250741650420.

The previous prime is 250741650413. The next prime is 250741650479. The reversal of 250741650421 is 124056147052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173796438321 + 76945212100 = 416889^2 + 277390^2 .

It is a cyclic number.

It is not a de Polignac number, because 250741650421 - 2³ = 250741650413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250741650721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125370825210 + 125370825211.

It is an arithmetic number, because the mean of its divisors is an integer number (125370825211).

Almost surely, 2^250741650421 is an apocalyptic number.

It is an amenable number.

250741650421 is a deficient number, since it is larger than the sum of its proper divisors (1).

250741650421 is an equidigital number, since it uses as much as digits as its factorization.

250741650421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 37.

Adding to 250741650421 its reverse (124056147052), we get a palindrome (374797797473).

The spelling of 250741650421 in words is "two hundred fifty billion, seven hundred forty-one million, six hundred fifty thousand, four hundred twenty-one".