1425899 has 2 divisors, whose sum is σ = 1425900. Its totient is φ = 1425898.

The previous prime is 1425889. The next prime is 1425911. The reversal of 1425899 is 9985241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1425899 - 2⁴ = 1425883 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1425889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712949 + 712950.

It is an arithmetic number, because the mean of its divisors is an integer number (712950).

2^1425899 is an apocalyptic number.

1425899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425899 is an equidigital number, since it uses as much as digits as its factorization.

1425899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 38.

The square root of 1425899 is about 1194.1101289245. The cubic root of 1425899 is about 112.5545151426.

The spelling of 1425899 in words is "one million, four hundred twenty-five thousand, eight hundred ninety-nine".