250640653 has 2 divisors, whose sum is σ = 250640654. Its totient is φ = 250640652.

The previous prime is 250640651. The next prime is 250640681. The reversal of 250640653 is 356046052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243765769 + 6874884 = 15613^2 + 2622^2 .

It is a cyclic number.

It is not a de Polignac number, because 250640653 - 2¹ = 250640651 is a prime.

Together with 250640651, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250640651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125320326 + 125320327.

It is an arithmetic number, because the mean of its divisors is an integer number (125320327).

Almost surely, 2^250640653 is an apocalyptic number.

It is an amenable number.

250640653 is a deficient number, since it is larger than the sum of its proper divisors (1).

250640653 is an equidigital number, since it uses as much as digits as its factorization.

250640653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 250640653 is about 15831.6345650094. The cubic root of 250640653 is about 630.4981807412.

The spelling of 250640653 in words is "two hundred fifty million, six hundred forty thousand, six hundred fifty-three".