250305613 has 2 divisors, whose sum is σ = 250305614. Its totient is φ = 250305612.

The previous prime is 250305607. The next prime is 250305617. The reversal of 250305613 is 316503052.

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., 151462249 + 98843364 = 12307^2 + 9942^2 .

It is a cyclic number.

It is not a de Polignac number, because 250305613 - 2²¹ = 248208461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250305617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125152806 + 125152807.

It is an arithmetic number, because the mean of its divisors is an integer number (125152807).

Almost surely, 2^250305613 is an apocalyptic number.

It is an amenable number.

250305613 is a deficient number, since it is larger than the sum of its proper divisors (1).

250305613 is an equidigital number, since it uses as much as digits as its factorization.

250305613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 250305613 is about 15821.0496807260. The cubic root of 250305613 is about 630.2171192523.

Adding to 250305613 its reverse (316503052), we get a palindrome (566808665).

The spelling of 250305613 in words is "two hundred fifty million, three hundred five thousand, six hundred thirteen".