1659225 has 12 divisors (see below), whose sum is σ = 2743376. Its totient is φ = 884880.

The previous prime is 1659223. The next prime is 1659233. The reversal of 1659225 is 5229561.

It is a happy number.

1659225 is nontrivially palindromic in base 4.

It is not a de Polignac number, because 1659225 - 2¹ = 1659223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1659192 and 1659201.

It is not an unprimeable number, because it can be changed into a prime (1659223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10987 + ... + 11136.

2^1659225 is an apocalyptic number.

1659225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1659225 is a deficient number, since it is larger than the sum of its proper divisors (1084151).

1659225 is a wasteful number, since it uses less digits than its factorization.

1659225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22136 (or 22131 counting only the distinct ones).

The product of its digits is 5400, while the sum is 30.

The square root of 1659225 is about 1288.1090792320. The cubic root of 1659225 is about 118.3863854339.

The spelling of 1659225 in words is "one million, six hundred fifty-nine thousand, two hundred twenty-five".