1609425 has 36 divisors (see below), whose sum is σ = 3017664. Its totient is φ = 818400.

The previous prime is 1609423. The next prime is 1609457. The reversal of 1609425 is 5249061.

It is not a de Polignac number, because 1609425 - 2¹ = 1609423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1609423) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5020 + ... + 5330.

It is an arithmetic number, because the mean of its divisors is an integer number (83824).

2^1609425 is an apocalyptic number.

1609425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1609425 is a deficient number, since it is larger than the sum of its proper divisors (1408239).

1609425 is a wasteful number, since it uses less digits than its factorization.

1609425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1609425 is about 1268.6311520690. The cubic root of 1609425 is about 117.1899172835.

The spelling of 1609425 in words is "one million, six hundred nine thousand, four hundred twenty-five".