84691925 has 6 divisors (see below), whose sum is σ = 105018018. Its totient is φ = 67753520.

The previous prime is 84691889. The next prime is 84691951. The reversal of 84691925 is 52919648.

It can be written as a sum of positive squares in 3 ways, for example, as 21743569 + 62948356 = 4663^2 + 7934^2 .

It is not a de Polignac number, because 84691925 - 2⁸ = 84691669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1693814 + ... + 1693863.

It is an arithmetic number, because the mean of its divisors is an integer number (17503003).

Almost surely, 2^84691925 is an apocalyptic number.

It is an amenable number.

84691925 is a deficient number, since it is larger than the sum of its proper divisors (20326093).

84691925 is a wasteful number, since it uses less digits than its factorization.

84691925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387687 (or 3387682 counting only the distinct ones).

The product of its digits is 155520, while the sum is 44.

The square root of 84691925 is about 9202.8215781900. The cubic root of 84691925 is about 439.1511267881.

The spelling of 84691925 in words is "eighty-four million, six hundred ninety-one thousand, nine hundred twenty-five".