250689641 has 2 divisors, whose sum is σ = 250689642. Its totient is φ = 250689640.

The previous prime is 250689619. The next prime is 250689661. The reversal of 250689641 is 146986052.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151388416 + 99301225 = 12304^2 + 9965^2 .

It is a cyclic number.

It is not a de Polignac number, because 250689641 - 2⁶ = 250689577 is a prime.

It is a super-2 number, since 2×250689641² = 125690592209417762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (250689661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125344820 + 125344821.

It is an arithmetic number, because the mean of its divisors is an integer number (125344821).

Almost surely, 2^250689641 is an apocalyptic number.

It is an amenable number.

250689641 is a deficient number, since it is larger than the sum of its proper divisors (1).

250689641 is an equidigital number, since it uses as much as digits as its factorization.

250689641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 250689641 is about 15833.1816448874. The cubic root of 250689641 is about 630.5392552602.

The spelling of 250689641 in words is "two hundred fifty million, six hundred eighty-nine thousand, six hundred forty-one".