85025981767 has 2 divisors, whose sum is σ = 85025981768. Its totient is φ = 85025981766.

The previous prime is 85025981659. The next prime is 85025981773. The reversal of 85025981767 is 76718952058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85025981767 - 2¹⁵ = 85025948999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85025981867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42512990883 + 42512990884.

It is an arithmetic number, because the mean of its divisors is an integer number (42512990884).

Almost surely, 2^85025981767 is an apocalyptic number.

85025981767 is a deficient number, since it is larger than the sum of its proper divisors (1).

85025981767 is an equidigital number, since it uses as much as digits as its factorization.

85025981767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8467200, while the sum is 58.

The spelling of 85025981767 in words is "eighty-five billion, twenty-five million, nine hundred eighty-one thousand, seven hundred sixty-seven".