250956869 has 2 divisors, whose sum is σ = 250956870. Its totient is φ = 250956868.

The previous prime is 250956847. The next prime is 250956889. The reversal of 250956869 is 968659052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197739844 + 53217025 = 14062^2 + 7295^2 .

It is a cyclic number.

It is not a de Polignac number, because 250956869 - 2²⁰ = 249908293 is a prime.

It is a super-2 number, since 2×250956869² = 125958700196566322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen 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 (250956809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125478434 + 125478435.

It is an arithmetic number, because the mean of its divisors is an integer number (125478435).

Almost surely, 2^250956869 is an apocalyptic number.

It is an amenable number.

250956869 is a deficient number, since it is larger than the sum of its proper divisors (1).

250956869 is an equidigital number, since it uses as much as digits as its factorization.

250956869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The square root of 250956869 is about 15841.6182569837. The cubic root of 250956869 is about 630.7632213132.

The spelling of 250956869 in words is "two hundred fifty million, nine hundred fifty-six thousand, eight hundred sixty-nine".