84128266625 has 32 divisors (see below), whose sum is σ = 113150637600. Its totient is φ = 62080300800.

The previous prime is 84128266613. The next prime is 84128266667. The reversal of 84128266625 is 52666282148.

It can be written as a sum of positive squares in 16 ways, for example, as 82671775729 + 1456490896 = 287527^2 + 38164^2 .

It is not a de Polignac number, because 84128266625 - 2¹⁶ = 84128201089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2304011 + ... + 2340239.

It is an arithmetic number, because the mean of its divisors is an integer number (3535957425).

Almost surely, 2^84128266625 is an apocalyptic number.

It is an amenable number.

84128266625 is a deficient number, since it is larger than the sum of its proper divisors (29022370975).

84128266625 is a wasteful number, since it uses less digits than its factorization.

84128266625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37686 (or 37676 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 50.

The spelling of 84128266625 in words is "eighty-four billion, one hundred twenty-eight million, two hundred sixty-six thousand, six hundred twenty-five".