20443511420125 has 16 divisors (see below), whose sum is σ = 25565891450112. Its totient is φ = 16321226317200.

The previous prime is 20443511420093. The next prime is 20443511420131. The reversal of 20443511420125 is 52102411534402.

It is not a de Polignac number, because 20443511420125 - 2⁵ = 20443511420093 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 15 ways as a sum of consecutive naturals, for example, 167852977 + ... + 167974726.

It is an arithmetic number, because the mean of its divisors is an integer number (1597868215632).

Almost surely, 2^{20443511420125} is an apocalyptic number.

20443511420125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20443511420125 is a deficient number, since it is larger than the sum of its proper divisors (5122380029987).

20443511420125 is an equidigital number, since it uses as much as digits as its factorization.

20443511420125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335828205 (or 335828195 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 20443511420125 its reverse (52102411534402), we get a palindrome (72545922954527).

The spelling of 20443511420125 in words is "twenty trillion, four hundred forty-three billion, five hundred eleven million, four hundred twenty thousand, one hundred twenty-five".