2500180121 has 2 divisors, whose sum is σ = 2500180122. Its totient is φ = 2500180120.

The previous prime is 2500180061. The next prime is 2500180153. The reversal of 2500180121 is 1210810052.

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., 1269924496 + 1230255625 = 35636^2 + 35075^2 .

It is a cyclic number.

It is not a de Polignac number, because 2500180121 - 2¹⁴ = 2500163737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2500180093 and 2500180102.

It is not a weakly prime, because it can be changed into another prime (2500180621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250090060 + 1250090061.

It is an arithmetic number, because the mean of its divisors is an integer number (1250090061).

Almost surely, 2^2500180121 is an apocalyptic number.

It is an amenable number.

2500180121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2500180121 is an equidigital number, since it uses as much as digits as its factorization.

2500180121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 2500180121 is about 50001.8011775576. The cubic root of 2500180121 is about 1357.2414024224.

Adding to 2500180121 its reverse (1210810052), we get a palindrome (3710990173).

The spelling of 2500180121 in words is "two billion, five hundred million, one hundred eighty thousand, one hundred twenty-one".