84340725 has 24 divisors (see below), whose sum is σ = 159364800. Its totient is φ = 38555520.

The previous prime is 84340691. The next prime is 84340727. The reversal of 84340725 is 52704348.

It is not a de Polignac number, because 84340725 - 2¹⁰ = 84339701 is a prime.

It is a super-2 number, since 2×84340725² = 14226715787051250, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84340727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79800 + ... + 80849.

It is an arithmetic number, because the mean of its divisors is an integer number (6640200).

Almost surely, 2^84340725 is an apocalyptic number.

It is an amenable number.

84340725 is a deficient number, since it is larger than the sum of its proper divisors (75024075).

84340725 is a wasteful number, since it uses less digits than its factorization.

84340725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160669 (or 160664 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 84340725 is about 9183.7206512393. The cubic root of 84340725 is about 438.5432626391.

The spelling of 84340725 in words is "eighty-four million, three hundred forty thousand, seven hundred twenty-five".