1425138901 has 2 divisors, whose sum is σ = 1425138902. Its totient is φ = 1425138900.

The previous prime is 1425138893. The next prime is 1425138929. The reversal of 1425138901 is 1098315241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1425138001 + 900 = 37751^2 + 30^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425138901 - 2³ = 1425138893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1425138931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712569450 + 712569451.

It is an arithmetic number, because the mean of its divisors is an integer number (712569451).

Almost surely, 2^1425138901 is an apocalyptic number.

It is an amenable number.

1425138901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425138901 is an equidigital number, since it uses as much as digits as its factorization.

1425138901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1425138901 is about 37751.0119202122. The cubic root of 1425138901 is about 1125.3451190709.

The spelling of 1425138901 in words is "one billion, four hundred twenty-five million, one hundred thirty-eight thousand, nine hundred one".