1425423889 has 2 divisors, whose sum is σ = 1425423890. Its totient is φ = 1425423888.

The previous prime is 1425423887. The next prime is 1425423907. The reversal of 1425423889 is 9883245241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1346302864 + 79121025 = 36692^2 + 8895^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425423889 - 2¹ = 1425423887 is a prime.

Together with 1425423887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1425423887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712711944 + 712711945.

It is an arithmetic number, because the mean of its divisors is an integer number (712711945).

Almost surely, 2^1425423889 is an apocalyptic number.

It is an amenable number.

1425423889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425423889 is an equidigital number, since it uses as much as digits as its factorization.

1425423889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 552960, while the sum is 46.

The square root of 1425423889 is about 37754.7863058447. The cubic root of 1425423889 is about 1125.4201266086.

The spelling of 1425423889 in words is "one billion, four hundred twenty-five million, four hundred twenty-three thousand, eight hundred eighty-nine".