20003505425 has 12 divisors (see below), whose sum is σ = 26109839280. Its totient is φ = 15160551120.

The previous prime is 20003505331. The next prime is 20003505451. The reversal of 20003505425 is 52450530002.

It is not a de Polignac number, because 20003505425 - 2¹⁴ = 20003489041 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20003505394 and 20003505403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21055847 + ... + 21056796.

It is an arithmetic number, because the mean of its divisors is an integer number (2175819940).

Almost surely, 2^20003505425 is an apocalyptic number.

20003505425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20003505425 is a deficient number, since it is larger than the sum of its proper divisors (6106333855).

20003505425 is a wasteful number, since it uses less digits than its factorization.

20003505425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42112672 (or 42112667 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The spelling of 20003505425 in words is "twenty billion, three million, five hundred five thousand, four hundred twenty-five".