20125350005 has 32 divisors (see below), whose sum is σ = 24860408544. Its totient is φ = 15633985536.

The previous prime is 20125350001. The next prime is 20125350029. The reversal of 20125350005 is 50005352102.

It can be written as a sum of positive squares in 16 ways, for example, as 2935255684 + 17190094321 = 54178^2 + 131111^2 .

It is a cyclic number.

It is not a de Polignac number, because 20125350005 - 2² = 20125350001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125350001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16590779 + ... + 16591991.

It is an arithmetic number, because the mean of its divisors is an integer number (776887767).

Almost surely, 2^20125350005 is an apocalyptic number.

It is an amenable number.

20125350005 is a deficient number, since it is larger than the sum of its proper divisors (4735058539).

20125350005 is a wasteful number, since it uses less digits than its factorization.

20125350005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865.

The product of its (nonzero) digits is 1500, while the sum is 23.

The spelling of 20125350005 in words is "twenty billion, one hundred twenty-five million, three hundred fifty thousand, five".