250000013 has 2 divisors, whose sum is σ = 250000014. Its totient is φ = 250000012.

The previous prime is 249999991. The next prime is 250000019. The reversal of 250000013 is 310000052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248945284 + 1054729 = 15778^2 + 1027^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-250000013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 249999949 and 250000003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250000019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125000006 + 125000007.

It is an arithmetic number, because the mean of its divisors is an integer number (125000007).

Almost surely, 2^250000013 is an apocalyptic number.

It is an amenable number.

250000013 is a deficient number, since it is larger than the sum of its proper divisors (1).

250000013 is an equidigital number, since it uses as much as digits as its factorization.

250000013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 250000013 is about 15811.3887119380. The cubic root of 250000013 is about 629.9605358668.

Adding to 250000013 its reverse (310000052), we get a palindrome (560000065).

The spelling of 250000013 in words is "two hundred fifty million, thirteen", and thus it is an aban number.