1425315121 has 2 divisors, whose sum is σ = 1425315122. Its totient is φ = 1425315120.

The previous prime is 1425315079. The next prime is 1425315161. The reversal of 1425315121 is 1215135241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 975875121 + 449440000 = 31239^2 + 21200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425315121 - 2²¹ = 1423217969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1425315161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712657560 + 712657561.

It is an arithmetic number, because the mean of its divisors is an integer number (712657561).

Almost surely, 2^1425315121 is an apocalyptic number.

It is an amenable number.

1425315121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425315121 is an equidigital number, since it uses as much as digits as its factorization.

1425315121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1425315121 is about 37753.3458252378. The cubic root of 1425315121 is about 1125.3915005484.

The spelling of 1425315121 in words is "one billion, four hundred twenty-five million, three hundred fifteen thousand, one hundred twenty-one".