20413515132125 has 8 divisors (see below), whose sum is σ = 25476066885048. Its totient is φ = 16330812105600.

The previous prime is 20413515132119. The next prime is 20413515132161. The reversal of 20413515132125 is 52123151531402.

It can be written as a sum of positive squares in 4 ways, for example, as 2265548770276 + 18147966361849 = 1505174^2 + 4260043^2 .

It is not a de Polignac number, because 20413515132125 - 2¹⁸ = 20413514869981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81654060404 + ... + 81654060653.

It is an arithmetic number, because the mean of its divisors is an integer number (3184508360631).

Almost surely, 2^{20413515132125} is an apocalyptic number.

20413515132125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20413515132125 is a deficient number, since it is larger than the sum of its proper divisors (5062551752923).

20413515132125 is an equidigital number, since it uses as much as digits as its factorization.

20413515132125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163308121072 (or 163308121062 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 20413515132125 its reverse (52123151531402), we get a palindrome (72536666663527).

The spelling of 20413515132125 in words is "twenty trillion, four hundred thirteen billion, five hundred fifteen million, one hundred thirty-two thousand, one hundred twenty-five".