250005121 has 2 divisors, whose sum is σ = 250005122. Its totient is φ = 250005120.

The previous prime is 250005089. The next prime is 250005127. The reversal of 250005121 is 121500052.

250005121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214769025 + 35236096 = 14655^2 + 5936^2 .

It is a cyclic number.

It is not a de Polignac number, because 250005121 - 2⁵ = 250005089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 250005095 and 250005104.

It is not a weakly prime, because it can be changed into another prime (250005127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125002560 + 125002561.

It is an arithmetic number, because the mean of its divisors is an integer number (125002561).

Almost surely, 2^250005121 is an apocalyptic number.

It is an amenable number.

250005121 is a deficient number, since it is larger than the sum of its proper divisors (1).

250005121 is an equidigital number, since it uses as much as digits as its factorization.

250005121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 250005121 is about 15811.5502402516. The cubic root of 250005121 is about 629.9648262885.

Adding to 250005121 its reverse (121500052), we get a palindrome (371505173).

The spelling of 250005121 in words is "two hundred fifty million, five thousand, one hundred twenty-one".