83409925 has 12 divisors (see below), whose sum is σ = 103721536. Its totient is φ = 66538800.

The previous prime is 83409857. The next prime is 83409947. The reversal of 83409925 is 52990438.

It is a happy number.

It is not a de Polignac number, because 83409925 - 2⁷ = 83409797 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 4630 + ... + 13720.

Almost surely, 2^83409925 is an apocalyptic number.

It is an amenable number.

83409925 is a deficient number, since it is larger than the sum of its proper divisors (20311611).

83409925 is a wasteful number, since it uses less digits than its factorization.

83409925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9468 (or 9463 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 83409925 is about 9132.9034266218. The cubic root of 83409925 is about 436.9240093592.

The spelling of 83409925 in words is "eighty-three million, four hundred nine thousand, nine hundred twenty-five".