84205725 has 24 divisors (see below), whose sum is σ = 140011872. Its totient is φ = 44654400.

The previous prime is 84205687. The next prime is 84205729. The reversal of 84205725 is 52750248.

It is not a de Polignac number, because 84205725 - 2¹⁴ = 84189341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84205729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10474 + ... + 16676.

It is an arithmetic number, because the mean of its divisors is an integer number (5833828).

Almost surely, 2^84205725 is an apocalyptic number.

It is an amenable number.

84205725 is a deficient number, since it is larger than the sum of its proper divisors (55806147).

84205725 is a wasteful number, since it uses less digits than its factorization.

84205725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6397 (or 6392 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 84205725 is about 9176.3677454644. The cubic root of 84205725 is about 438.3091528955.

The spelling of 84205725 in words is "eighty-four million, two hundred five thousand, seven hundred twenty-five".