8505725741 has 2 divisors, whose sum is σ = 8505725742. Its totient is φ = 8505725740.

The previous prime is 8505725731. The next prime is 8505725771. The reversal of 8505725741 is 1475275058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6683716516 + 1822009225 = 81754^2 + 42685^2 .

It is a cyclic number.

It is not a de Polignac number, because 8505725741 - 2¹⁴ = 8505709357 is a prime.

It is a super-2 number, since 2×8505725741² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8505725692 and 8505725701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8505725731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4252862870 + 4252862871.

It is an arithmetic number, because the mean of its divisors is an integer number (4252862871).

Almost surely, 2^8505725741 is an apocalyptic number.

It is an amenable number.

8505725741 is a deficient number, since it is larger than the sum of its proper divisors (1).

8505725741 is an equidigital number, since it uses as much as digits as its factorization.

8505725741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392000, while the sum is 44.

The square root of 8505725741 is about 92226.4915357838. The cubic root of 8505725741 is about 2041.2856932007.

The spelling of 8505725741 in words is "eight billion, five hundred five million, seven hundred twenty-five thousand, seven hundred forty-one".