85747125019 has 2 divisors, whose sum is σ = 85747125020. Its totient is φ = 85747125018.

The previous prime is 85747124929. The next prime is 85747125047. The reversal of 85747125019 is 91052174758.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85747125019 - 2²¹ = 85745027867 is a prime.

It is a super-2 number, since 2×85747125019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85747125059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42873562509 + 42873562510.

It is an arithmetic number, because the mean of its divisors is an integer number (42873562510).

Almost surely, 2^85747125019 is an apocalyptic number.

85747125019 is a deficient number, since it is larger than the sum of its proper divisors (1).

85747125019 is an equidigital number, since it uses as much as digits as its factorization.

85747125019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 705600, while the sum is 49.

The spelling of 85747125019 in words is "eighty-five billion, seven hundred forty-seven million, one hundred twenty-five thousand, nineteen".