250660013 has 2 divisors, whose sum is σ = 250660014. Its totient is φ = 250660012.

The previous prime is 250659979. The next prime is 250660031. The reversal of 250660013 is 310066052.

Together with next prime (250660031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222069604 + 28590409 = 14902^2 + 5347^2 .

It is a cyclic number.

It is not a de Polignac number, because 250660013 - 2⁸ = 250659757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250660063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125330006 + 125330007.

It is an arithmetic number, because the mean of its divisors is an integer number (125330007).

Almost surely, 2^250660013 is an apocalyptic number.

It is an amenable number.

250660013 is a deficient number, since it is larger than the sum of its proper divisors (1).

250660013 is an equidigital number, since it uses as much as digits as its factorization.

250660013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 250660013 is about 15832.2459872249. The cubic root of 250660013 is about 630.5144139823.

The spelling of 250660013 in words is "two hundred fifty million, six hundred sixty thousand, thirteen".