505530025139 has 2 divisors, whose sum is σ = 505530025140. Its totient is φ = 505530025138.

The previous prime is 505530025109. The next prime is 505530025141. The reversal of 505530025139 is 931520035505.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505530025139 is a prime.

Together with 505530025141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (505530025109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252765012569 + 252765012570.

It is an arithmetic number, because the mean of its divisors is an integer number (252765012570).

Almost surely, 2^505530025139 is an apocalyptic number.

505530025139 is a deficient number, since it is larger than the sum of its proper divisors (1).

505530025139 is an equidigital number, since it uses as much as digits as its factorization.

505530025139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 101250, while the sum is 38.

The spelling of 505530025139 in words is "five hundred five billion, five hundred thirty million, twenty-five thousand, one hundred thirty-nine".