84857577425 has 12 divisors (see below), whose sum is σ = 106244985600. Its totient is φ = 67226971920.

The previous prime is 84857577403. The next prime is 84857577449. The reversal of 84857577425 is 52477575848.

It is a happy number.

It is not a de Polignac number, because 84857577425 - 2¹² = 84857573329 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 16474625 + ... + 16479774.

It is an arithmetic number, because the mean of its divisors is an integer number (8853748800).

Almost surely, 2^84857577425 is an apocalyptic number.

It is an amenable number.

84857577425 is a deficient number, since it is larger than the sum of its proper divisors (21387408175).

84857577425 is a wasteful number, since it uses less digits than its factorization.

84857577425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32954512 (or 32954507 counting only the distinct ones).

The product of its digits is 87808000, while the sum is 62.

The spelling of 84857577425 in words is "eighty-four billion, eight hundred fifty-seven million, five hundred seventy-seven thousand, four hundred twenty-five".