250440613 has 2 divisors, whose sum is σ = 250440614. Its totient is φ = 250440612.

The previous prime is 250440601. The next prime is 250440683. The reversal of 250440613 is 316044052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232318564 + 18122049 = 15242^2 + 4257^2 .

It is a cyclic number.

It is not a de Polignac number, because 250440613 - 2⁹ = 250440101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250440683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125220306 + 125220307.

It is an arithmetic number, because the mean of its divisors is an integer number (125220307).

Almost surely, 2^250440613 is an apocalyptic number.

It is an amenable number.

250440613 is a deficient number, since it is larger than the sum of its proper divisors (1).

250440613 is an equidigital number, since it uses as much as digits as its factorization.

250440613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 250440613 is about 15825.3155734728. The cubic root of 250440613 is about 630.3303994661.

Adding to 250440613 its reverse (316044052), we get a palindrome (566484665).

The spelling of 250440613 in words is "two hundred fifty million, four hundred forty thousand, six hundred thirteen".