1425559 has 4 divisors (see below), whose sum is σ = 1446904. Its totient is φ = 1404216.

The previous prime is 1425547. The next prime is 1425583. The reversal of 1425559 is 9555241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1425559 - 2⁵ = 1425527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1425559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10572 + ... + 10705.

It is an arithmetic number, because the mean of its divisors is an integer number (361726).

2^1425559 is an apocalyptic number.

1425559 is a deficient number, since it is larger than the sum of its proper divisors (21345).

1425559 is an equidigital number, since it uses as much as digits as its factorization.

1425559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21344.

The product of its digits is 9000, while the sum is 31.

The square root of 1425559 is about 1193.9677550085. The cubic root of 1425559 is about 112.5455683712.

The spelling of 1425559 in words is "one million, four hundred twenty-five thousand, five hundred fifty-nine".