20425032377 has 2 divisors, whose sum is σ = 20425032378. Its totient is φ = 20425032376.

The previous prime is 20425032367. The next prime is 20425032391. The reversal of 20425032377 is 77323052402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19464714256 + 960318121 = 139516^2 + 30989^2 .

It is a cyclic number.

It is not a de Polignac number, because 20425032377 - 2¹⁰ = 20425031353 is a prime.

It is not a weakly prime, because it can be changed into another prime (20425032317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10212516188 + 10212516189.

It is an arithmetic number, because the mean of its divisors is an integer number (10212516189).

Almost surely, 2^20425032377 is an apocalyptic number.

It is an amenable number.

20425032377 is a deficient number, since it is larger than the sum of its proper divisors (1).

20425032377 is an equidigital number, since it uses as much as digits as its factorization.

20425032377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 35.

Adding to 20425032377 its reverse (77323052402), we get a palindrome (97748084779).

The spelling of 20425032377 in words is "twenty billion, four hundred twenty-five million, thirty-two thousand, three hundred seventy-seven".