250235221 has 2 divisors, whose sum is σ = 250235222. Its totient is φ = 250235220.

The previous prime is 250235201. The next prime is 250235231. The reversal of 250235221 is 122532052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186459025 + 63776196 = 13655^2 + 7986^2 .

It is a cyclic number.

It is not a de Polignac number, because 250235221 - 2⁹ = 250234709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 250235192 and 250235201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250235201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125117610 + 125117611.

It is an arithmetic number, because the mean of its divisors is an integer number (125117611).

Almost surely, 2^250235221 is an apocalyptic number.

It is an amenable number.

250235221 is a deficient number, since it is larger than the sum of its proper divisors (1).

250235221 is an equidigital number, since it uses as much as digits as its factorization.

250235221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 250235221 is about 15818.8248931455. The cubic root of 250235221 is about 630.1580362748.

Adding to 250235221 its reverse (122532052), we get a palindrome (372767273).

The spelling of 250235221 in words is "two hundred fifty million, two hundred thirty-five thousand, two hundred twenty-one".