20325400057 has 2 divisors, whose sum is σ = 20325400058. Its totient is φ = 20325400056.

The previous prime is 20325399979. The next prime is 20325400063. The reversal of 20325400057 is 75000452302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18292833001 + 2032567056 = 135251^2 + 45084^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20325400057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20325399998 and 20325400034.

It is not a weakly prime, because it can be changed into another prime (20325400657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10162700028 + 10162700029.

It is an arithmetic number, because the mean of its divisors is an integer number (10162700029).

Almost surely, 2^20325400057 is an apocalyptic number.

It is an amenable number.

20325400057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20325400057 is an equidigital number, since it uses as much as digits as its factorization.

20325400057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 28.

Adding to 20325400057 its reverse (75000452302), we get a palindrome (95325852359).

The spelling of 20325400057 in words is "twenty billion, three hundred twenty-five million, four hundred thousand, fifty-seven".