1025454121 has 2 divisors, whose sum is σ = 1025454122. Its totient is φ = 1025454120.

The previous prime is 1025454091. The next prime is 1025454167. The reversal of 1025454121 is 1214545201.

1025454121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1019908096 + 5546025 = 31936^2 + 2355^2 .

It is a cyclic number.

It is not a de Polignac number, because 1025454121 - 2⁹ = 1025453609 is a prime.

It is not a weakly prime, because it can be changed into another prime (1025454721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512727060 + 512727061.

It is an arithmetic number, because the mean of its divisors is an integer number (512727061).

Almost surely, 2^1025454121 is an apocalyptic number.

It is an amenable number.

1025454121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025454121 is an equidigital number, since it uses as much as digits as its factorization.

1025454121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1025454121 is about 32022.7125802921. The cubic root of 1025454121 is about 1008.4137178150.

Adding to 1025454121 its reverse (1214545201), we get a palindrome (2239999322).

The spelling of 1025454121 in words is "one billion, twenty-five million, four hundred fifty-four thousand, one hundred twenty-one".