20105240325 has 48 divisors (see below), whose sum is σ = 33426432000. Its totient is φ = 10663057600.

The previous prime is 20105240303. The next prime is 20105240339. The reversal of 20105240325 is 52304250102.

It is not a de Polignac number, because 20105240325 - 2¹⁸ = 20104978181 is a prime.

It is a super-2 number, since 2×20105240325² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20105240295 and 20105240304.

It is a congruent number.

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, 13970956 + ... + 13972394.

It is an arithmetic number, because the mean of its divisors is an integer number (696384000).

Almost surely, 2^20105240325 is an apocalyptic number.

20105240325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20105240325 is a deficient number, since it is larger than the sum of its proper divisors (13321191675).

20105240325 is a wasteful number, since it uses less digits than its factorization.

20105240325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362 (or 2357 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 20105240325 its reverse (52304250102), we get a palindrome (72409490427).

The spelling of 20105240325 in words is "twenty billion, one hundred five million, two hundred forty thousand, three hundred twenty-five".