525505552993 has 2 divisors, whose sum is σ = 525505552994. Its totient is φ = 525505552992.

The previous prime is 525505552909. The next prime is 525505552997. The reversal of 525505552993 is 399255505525.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 450970000849 + 74535552144 = 671543^2 + 273012^2 .

It is a cyclic number.

It is not a de Polignac number, because 525505552993 - 2¹⁷ = 525505421921 is a prime.

It is not a weakly prime, because it can be changed into another prime (525505552997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262752776496 + 262752776497.

It is an arithmetic number, because the mean of its divisors is an integer number (262752776497).

Almost surely, 2^525505552993 is an apocalyptic number.

It is an amenable number.

525505552993 is a deficient number, since it is larger than the sum of its proper divisors (1).

525505552993 is an equidigital number, since it uses as much as digits as its factorization.

525505552993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15187500, while the sum is 55.

The spelling of 525505552993 in words is "five hundred twenty-five billion, five hundred five million, five hundred fifty-two thousand, nine hundred ninety-three".