85494836025 has 81 divisors (see below), whose sum is σ = 155467417287. Its totient is φ = 44911872000.

The previous prime is 85494835999. The next prime is 85494836027. The reversal of 85494836025 is 52063849458.

The square root of 85494836025 is 292395.

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

85494836025 is a `hidden beast` number, since 8 + 549 + 48 + 36 + 0 + 25 = 666.

It can be written as a sum of positive squares in 13 ways, for example, as 28216944441 + 57277891584 = 167979^2 + 239328^2 .

It is not a de Polignac number, because 85494836025 - 2⁷ = 85494835897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85494836027) 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 80 ways as a sum of consecutive naturals, for example, 442978329 + ... + 442978521.

Almost surely, 2^85494836025 is an apocalyptic number.

85494836025 is the 292395-th square number.

85494836025 is the 146198-th centered octagonal number.

It is an amenable number.

85494836025 is a deficient number, since it is larger than the sum of its proper divisors (69972581262).

85494836025 is a wasteful number, since it uses less digits than its factorization.

85494836025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 85494836025 in words is "eighty-five billion, four hundred ninety-four million, eight hundred thirty-six thousand, twenty-five".