1585425 has 12 divisors (see below), whose sum is σ = 2621360. Its totient is φ = 845520.

The previous prime is 1585411. The next prime is 1585427. The reversal of 1585425 is 5245851.

It is not a de Polignac number, because 1585425 - 2⁵ = 1585393 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1585392 and 1585401.

It is not an unprimeable number, because it can be changed into a prime (1585427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10495 + ... + 10644.

2^1585425 is an apocalyptic number.

1585425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1585425 is a deficient number, since it is larger than the sum of its proper divisors (1035935).

1585425 is a wasteful number, since it uses less digits than its factorization.

1585425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21152 (or 21147 counting only the distinct ones).

The product of its digits is 8000, while the sum is 30.

The square root of 1585425 is about 1259.1366089508. The cubic root of 1585425 is about 116.6044793296.

The spelling of 1585425 in words is "one million, five hundred eighty-five thousand, four hundred twenty-five".