20425314164 has 6 divisors (see below), whose sum is σ = 35744299794. Its totient is φ = 10212657080.

The previous prime is 20425314157. The next prime is 20425314167. The reversal of 20425314164 is 46141352402.

It can be written as a sum of positive squares in only one way, i.e., 19507708900 + 917605264 = 139670^2 + 30292^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20425314164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20425314167) by changing a digit.

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 as a sum of consecutive naturals, namely, 2553164267 + ... + 2553164274.

It is an arithmetic number, because the mean of its divisors is an integer number (5957383299).

Almost surely, 2^20425314164 is an apocalyptic number.

It is an amenable number.

20425314164 is a deficient number, since it is larger than the sum of its proper divisors (15318985630).

20425314164 is a wasteful number, since it uses less digits than its factorization.

20425314164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106328545 (or 5106328543 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 20425314164 its reverse (46141352402), we get a palindrome (66566666566).

The spelling of 20425314164 in words is "twenty billion, four hundred twenty-five million, three hundred fourteen thousand, one hundred sixty-four".