1603361325 has 12 divisors (see below), whose sum is σ = 2650890848. Its totient is φ = 855126000.

The previous prime is 1603361321. The next prime is 1603361363. The reversal of 1603361325 is 5231633061.

It is a happy number.

It is not a de Polignac number, because 1603361325 - 2² = 1603361321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1603361292 and 1603361301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1603361321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10689001 + ... + 10689150.

Almost surely, 2^1603361325 is an apocalyptic number.

1603361325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1603361325 is a deficient number, since it is larger than the sum of its proper divisors (1047529523).

1603361325 is a wasteful number, since it uses less digits than its factorization.

1603361325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21378164 (or 21378159 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 1603361325 is about 40041.9945182555. The cubic root of 1603361325 is about 1170.4255702210.

Adding to 1603361325 its reverse (5231633061), we get a palindrome (6834994386).

The spelling of 1603361325 in words is "one billion, six hundred three million, three hundred sixty-one thousand, three hundred twenty-five".