20123344025 has 6 divisors (see below), whose sum is σ = 24952946622. Its totient is φ = 16098675200.

The previous prime is 20123344009. The next prime is 20123344081. The reversal of 20123344025 is 52044332102.

It can be written as a sum of positive squares in 3 ways, for example, as 7027801 + 20116316224 = 2651^2 + 141832^2 .

It is not a de Polignac number, because 20123344025 - 2⁴ = 20123344009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20123343985 and 20123344003.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 402466856 + ... + 402466905.

It is an arithmetic number, because the mean of its divisors is an integer number (4158824437).

Almost surely, 2^20123344025 is an apocalyptic number.

20123344025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20123344025 is a deficient number, since it is larger than the sum of its proper divisors (4829602597).

20123344025 is an equidigital number, since it uses as much as digits as its factorization.

20123344025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804933771 (or 804933766 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 20123344025 its reverse (52044332102), we get a palindrome (72167676127).

The spelling of 20123344025 in words is "twenty billion, one hundred twenty-three million, three hundred forty-four thousand, twenty-five".