525505613 has 2 divisors, whose sum is σ = 525505614. Its totient is φ = 525505612.

The previous prime is 525505579. The next prime is 525505627. The reversal of 525505613 is 316505525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 500774884 + 24730729 = 22378^2 + 4973^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525505613 is a prime.

It is a super-2 number, since 2×525505613² = 552312298589011538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 525505613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525505913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262752806 + 262752807.

It is an arithmetic number, because the mean of its divisors is an integer number (262752807).

Almost surely, 2^525505613 is an apocalyptic number.

It is an amenable number.

525505613 is a deficient number, since it is larger than the sum of its proper divisors (1).

525505613 is an equidigital number, since it uses as much as digits as its factorization.

525505613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 525505613 is about 22923.9091997853. The cubic root of 525505613 is about 806.9732146808.

The spelling of 525505613 in words is "five hundred twenty-five million, five hundred five thousand, six hundred thirteen".