20530425225 has 48 divisors (see below), whose sum is σ = 34338427200. Its totient is φ = 10822705920.

The previous prime is 20530425217. The next prime is 20530425233. The reversal of 20530425225 is 52252403502.

It is an interprime number because it is at equal distance from previous prime (20530425217) and next prime (20530425233).

It is not a de Polignac number, because 20530425225 - 2³ = 20530425217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20530425192 and 20530425201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3618691 + ... + 3624359.

It is an arithmetic number, because the mean of its divisors is an integer number (715383900).

Almost surely, 2^20530425225 is an apocalyptic number.

20530425225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20530425225 is a deficient number, since it is larger than the sum of its proper divisors (13808001975).

20530425225 is a wasteful number, since it uses less digits than its factorization.

20530425225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6234 (or 6229 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

Adding to 20530425225 its reverse (52252403502), we get a palindrome (72782828727).

The spelling of 20530425225 in words is "twenty billion, five hundred thirty million, four hundred twenty-five thousand, two hundred twenty-five".