1425421201 has 2 divisors, whose sum is σ = 1425421202. Its totient is φ = 1425421200.

The previous prime is 1425421187. The next prime is 1425421229. The reversal of 1425421201 is 1021245241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1128892801 + 296528400 = 33599^2 + 17220^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425421201 - 2⁵ = 1425421169 is a prime.

It is not a weakly prime, because it can be changed into another prime (1425421271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712710600 + 712710601.

It is an arithmetic number, because the mean of its divisors is an integer number (712710601).

Almost surely, 2^1425421201 is an apocalyptic number.

It is an amenable number.

1425421201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425421201 is an equidigital number, since it uses as much as digits as its factorization.

1425421201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1425421201 is about 37754.7507076924. The cubic root of 1425421201 is about 1125.4194191860.

Adding to 1425421201 its reverse (1021245241), we get a palindrome (2446666442).

The spelling of 1425421201 in words is "one billion, four hundred twenty-five million, four hundred twenty-one thousand, two hundred one".