505425473389 has 2 divisors, whose sum is σ = 505425473390. Its totient is φ = 505425473388.

The previous prime is 505425473387. The next prime is 505425473431. The reversal of 505425473389 is 983374524505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 346312241289 + 159113232100 = 588483^2 + 398890^2 .

It is a cyclic number.

It is not a de Polignac number, because 505425473389 - 2¹ = 505425473387 is a prime.

Together with 505425473387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505425473387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252712736694 + 252712736695.

It is an arithmetic number, because the mean of its divisors is an integer number (252712736695).

Almost surely, 2^505425473389 is an apocalyptic number.

It is an amenable number.

505425473389 is a deficient number, since it is larger than the sum of its proper divisors (1).

505425473389 is an equidigital number, since it uses as much as digits as its factorization.

505425473389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144000, while the sum is 55.

The spelling of 505425473389 in words is "five hundred five billion, four hundred twenty-five million, four hundred seventy-three thousand, three hundred eighty-nine".