20003451025 has 12 divisors (see below), whose sum is σ = 24828323212. Its totient is φ = 15987248640.

The previous prime is 20003451023. The next prime is 20003451043. The reversal of 20003451025 is 52015430002.

It can be written as a sum of positive squares in 6 ways, for example, as 4597924864 + 15405526161 = 67808^2 + 124119^2 .

It is not a de Polignac number, because 20003451025 - 2¹ = 20003451023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20003450987 and 20003451005.

It is not an unprimeable number, because it can be changed into a prime (20003451023) by changing a digit.

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, 361464 + ... + 413113.

Almost surely, 2^20003451025 is an apocalyptic number.

20003451025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20003451025 is a deficient number, since it is larger than the sum of its proper divisors (4824872187).

20003451025 is a wasteful number, since it uses less digits than its factorization.

20003451025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775620 (or 775615 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 20003451025 its reverse (52015430002), we get a palindrome (72018881027).

The spelling of 20003451025 in words is "twenty billion, three million, four hundred fifty-one thousand, twenty-five".