1425785 has 8 divisors (see below), whose sum is σ = 1770120. Its totient is φ = 1101184.

The previous prime is 1425769. The next prime is 1425791. The reversal of 1425785 is 5875241.

It can be written as a sum of positive squares in 4 ways, for example, as 162409 + 1263376 = 403^2 + 1124^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1425785 - 2⁴ = 1425769 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4772 + ... + 5061.

It is an arithmetic number, because the mean of its divisors is an integer number (221265).

2^1425785 is an apocalyptic number.

It is an amenable number.

1425785 is a deficient number, since it is larger than the sum of its proper divisors (344335).

1425785 is an equidigital number, since it uses as much as digits as its factorization.

1425785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9867.

The product of its digits is 11200, while the sum is 32.

The square root of 1425785 is about 1194.0623936797. The cubic root of 1425785 is about 112.5515155013.

The spelling of 1425785 in words is "one million, four hundred twenty-five thousand, seven hundred eighty-five".