20550440325 has 24 divisors (see below), whose sum is σ = 33984014368. Its totient is φ = 10957884480.

The previous prime is 20550440303. The next prime is 20550440347. The reversal of 20550440325 is 52304405502.

It is an interprime number because it is at equal distance from previous prime (20550440303) and next prime (20550440347).

It is not a de Polignac number, because 20550440325 - 2⁹ = 20550439813 is a prime.

It is a super-2 number, since 2×20550440325² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20550440292 and 20550440301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 356199 + ... + 409851.

Almost surely, 2^20550440325 is an apocalyptic number.

20550440325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20550440325 is a deficient number, since it is larger than the sum of its proper divisors (13433574043).

20550440325 is a wasteful number, since it uses less digits than its factorization.

20550440325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58773 (or 58768 counting only the distinct ones).

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

Adding to 20550440325 its reverse (52304405502), we get a palindrome (72854845827).

The spelling of 20550440325 in words is "twenty billion, five hundred fifty million, four hundred forty thousand, three hundred twenty-five".