1425420401 has 2 divisors, whose sum is σ = 1425420402. Its totient is φ = 1425420400.

The previous prime is 1425420389. The next prime is 1425420421. The reversal of 1425420401 is 1040245241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1271635600 + 153784801 = 35660^2 + 12401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1425420401 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1425420421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712710200 + 712710201.

It is an arithmetic number, because the mean of its divisors is an integer number (712710201).

Almost surely, 2^1425420401 is an apocalyptic number.

It is an amenable number.

1425420401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425420401 is an equidigital number, since it uses as much as digits as its factorization.

1425420401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1425420401 is about 37754.7401129977. The cubic root of 1425420401 is about 1125.4192086433.

Adding to 1425420401 its reverse (1040245241), we get a palindrome (2465665642).

The spelling of 1425420401 in words is "one billion, four hundred twenty-five million, four hundred twenty thousand, four hundred one".