84109125 has 16 divisors (see below), whose sum is σ = 139958208. Its totient is φ = 44858000.

The previous prime is 84109121. The next prime is 84109127. The reversal of 84109125 is 52190148.

It is a happy number.

It is not a de Polignac number, because 84109125 - 2² = 84109121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84109092 and 84109101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84109121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111771 + ... + 112520.

It is an arithmetic number, because the mean of its divisors is an integer number (8747388).

Almost surely, 2^84109125 is an apocalyptic number.

It is an amenable number.

84109125 is a deficient number, since it is larger than the sum of its proper divisors (55849083).

84109125 is a wasteful number, since it uses less digits than its factorization.

84109125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224309 (or 224299 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 84109125 is about 9171.1027145049. The cubic root of 84109125 is about 438.1414807432.

The spelling of 84109125 in words is "eighty-four million, one hundred nine thousand, one hundred twenty-five".