20425203225 has 36 divisors (see below), whose sum is σ = 41810070016. Its totient is φ = 9337235040.

The previous prime is 20425203223. The next prime is 20425203233. The reversal of 20425203225 is 52230252402.

It is not a de Polignac number, because 20425203225 - 2¹ = 20425203223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20425203223) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 6482617 + ... + 6485766.

Almost surely, 2^20425203225 is an apocalyptic number.

20425203225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20425203225 is an abundant number, since it is smaller than the sum of its proper divisors (21384866791).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20425203225 is a wasteful number, since it uses less digits than its factorization.

20425203225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12968406 (or 12968398 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

Adding to 20425203225 its reverse (52230252402), we get a palindrome (72655455627).

The spelling of 20425203225 in words is "twenty billion, four hundred twenty-five million, two hundred three thousand, two hundred twenty-five".