1425889 has 2 divisors, whose sum is σ = 1425890. Its totient is φ = 1425888.

The previous prime is 1425883. The next prime is 1425899. The reversal of 1425889 is 9885241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1392400 + 33489 = 1180^2 + 183^2 .

It is an emirp because it is prime and its reverse (9885241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1425889 - 2³ = 1425881 is a prime.

It is a Chen prime.

1425889 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1425881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712944 + 712945.

It is an arithmetic number, because the mean of its divisors is an integer number (712945).

2^1425889 is an apocalyptic number.

It is an amenable number.

1425889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425889 is an equidigital number, since it uses as much as digits as its factorization.

1425889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 37.

The square root of 1425889 is about 1194.1059416986. The cubic root of 1425889 is about 112.5542520226.

The spelling of 1425889 in words is "one million, four hundred twenty-five thousand, eight hundred eighty-nine".