1603405425 has 48 divisors (see below), whose sum is σ = 2699077248. Its totient is φ = 839731200.

The previous prime is 1603405411. The next prime is 1603405499. The reversal of 1603405425 is 5245043061.

It is not a de Polignac number, because 1603405425 - 2⁸ = 1603405169 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1603405392 and 1603405401.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1879299 + ... + 1880151.

It is an arithmetic number, because the mean of its divisors is an integer number (56230776).

Almost surely, 2^1603405425 is an apocalyptic number.

1603405425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1603405425 is a deficient number, since it is larger than the sum of its proper divisors (1095671823).

1603405425 is a wasteful number, since it uses less digits than its factorization.

1603405425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290 (or 1285 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 1603405425 is about 40042.5451863390. The cubic root of 1603405425 is about 1170.4363008642.

Adding to 1603405425 its reverse (5245043061), we get a palindrome (6848448486).

The spelling of 1603405425 in words is "one billion, six hundred three million, four hundred five thousand, four hundred twenty-five".