250889381 has 2 divisors, whose sum is σ = 250889382. Its totient is φ = 250889380.

The previous prime is 250889377. The next prime is 250889399. The reversal of 250889381 is 183988052.

250889381 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., 247558756 + 3330625 = 15734^2 + 1825^2 .

It is a cyclic number.

It is not a de Polignac number, because 250889381 - 2² = 250889377 is a prime.

It is a super-2 number, since 2×250889381² = 125890962997126322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250889351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125444690 + 125444691.

It is an arithmetic number, because the mean of its divisors is an integer number (125444691).

Almost surely, 2^250889381 is an apocalyptic number.

It is an amenable number.

250889381 is a deficient number, since it is larger than the sum of its proper divisors (1).

250889381 is an equidigital number, since it uses as much as digits as its factorization.

250889381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 250889381 is about 15839.4880283423. The cubic root of 250889381 is about 630.7066740601.

The spelling of 250889381 in words is "two hundred fifty million, eight hundred eighty-nine thousand, three hundred eighty-one".