505725517373 has 2 divisors, whose sum is σ = 505725517374. Its totient is φ = 505725517372.

The previous prime is 505725517309. The next prime is 505725517387. The reversal of 505725517373 is 373715527505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 458454930649 + 47270586724 = 677093^2 + 217418^2 .

It is a cyclic number.

It is not a de Polignac number, because 505725517373 - 2⁶ = 505725517309 is a prime.

It is a super-2 number, since 2×505725517373² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505725517303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252862758686 + 252862758687.

It is an arithmetic number, because the mean of its divisors is an integer number (252862758687).

Almost surely, 2^505725517373 is an apocalyptic number.

It is an amenable number.

505725517373 is a deficient number, since it is larger than the sum of its proper divisors (1).

505725517373 is an equidigital number, since it uses as much as digits as its factorization.

505725517373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3858750, while the sum is 50.

The spelling of 505725517373 in words is "five hundred five billion, seven hundred twenty-five million, five hundred seventeen thousand, three hundred seventy-three".