85080139225 has 9 divisors (see below), whose sum is σ = 105501181117. Its totient is φ = 68062944640.

The previous prime is 85080139211. The next prime is 85080139229. The reversal of 85080139225 is 52293108058.

The square root of 85080139225 is 291685.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 20342461129 + 64737678096 = 142627^2 + 254436^2 .

It is not a de Polignac number, because 85080139225 - 2⁷ = 85080139097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85080139229) 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 in 8 ways as a sum of consecutive naturals, for example, 1429257 + ... + 1487593.

Almost surely, 2^85080139225 is an apocalyptic number.

85080139225 is the 291685-th square number.

85080139225 is the 145843-rd centered octagonal number.

It is an amenable number.

85080139225 is a deficient number, since it is larger than the sum of its proper divisors (20421041892).

85080139225 is an frugal number, since it uses more digits than its factorization.

85080139225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116684 (or 58342 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 85080139225 in words is "eighty-five billion, eighty million, one hundred thirty-nine thousand, two hundred twenty-five".