2125451113 has 2 divisors, whose sum is σ = 2125451114. Its totient is φ = 2125451112.

The previous prime is 2125451087. The next prime is 2125451149. The reversal of 2125451113 is 3111545212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1427857369 + 697593744 = 37787^2 + 26412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2125451113 is a prime.

It is not a weakly prime, because it can be changed into another prime (2125451173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062725556 + 1062725557.

It is an arithmetic number, because the mean of its divisors is an integer number (1062725557).

Almost surely, 2^2125451113 is an apocalyptic number.

It is an amenable number.

2125451113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125451113 is an equidigital number, since it uses as much as digits as its factorization.

2125451113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 25.

The square root of 2125451113 is about 46102.6150342906. The cubic root of 2125451113 is about 1285.7317644649.

Adding to 2125451113 its reverse (3111545212), we get a palindrome (5236996325).

The spelling of 2125451113 in words is "two billion, one hundred twenty-five million, four hundred fifty-one thousand, one hundred thirteen".