250115121 has 10 divisors (see below), whose sum is σ = 373628882. Its totient is φ = 166743360.

The previous prime is 250115083. The next prime is 250115123. The reversal of 250115121 is 121511052.

250115121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 187388721 + 62726400 = 13689^2 + 7920^2 .

It is not a de Polignac number, because 250115121 - 2⁶ = 250115057 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 250115094 and 250115103.

It is not an unprimeable number, because it can be changed into a prime (250115123) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1543840 + ... + 1544001.

Almost surely, 2^250115121 is an apocalyptic number.

It is an amenable number.

250115121 is a deficient number, since it is larger than the sum of its proper divisors (123513761).

250115121 is an equidigital number, since it uses as much as digits as its factorization.

250115121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3087853 (or 3087844 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 250115121 is about 15815.0283275118. The cubic root of 250115121 is about 630.0572056898.

Adding to 250115121 its reverse (121511052), we get a palindrome (371626173).

The spelling of 250115121 in words is "two hundred fifty million, one hundred fifteen thousand, one hundred twenty-one".