20514125413 has 4 divisors (see below), whose sum is σ = 20725611340. Its totient is φ = 20302639488.

The previous prime is 20514125407. The next prime is 20514125461. The reversal of 20514125413 is 31452141502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2893686849 + 17620438564 = 53793^2 + 132742^2 .

It is a cyclic number.

It is not a de Polignac number, because 20514125413 - 2²⁹ = 19977254501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20514125213) 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 3 ways as a sum of consecutive naturals, for example, 105742818 + ... + 105743011.

It is an arithmetic number, because the mean of its divisors is an integer number (5181402835).

Almost surely, 2^20514125413 is an apocalyptic number.

It is an amenable number.

20514125413 is a deficient number, since it is larger than the sum of its proper divisors (211485927).

20514125413 is an equidigital number, since it uses as much as digits as its factorization.

20514125413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211485926.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 20514125413 its reverse (31452141502), we get a palindrome (51966266915).

The spelling of 20514125413 in words is "twenty billion, five hundred fourteen million, one hundred twenty-five thousand, four hundred thirteen".