2809125 has 48 divisors (see below), whose sum is σ = 5548608. Its totient is φ = 1356000.

The previous prime is 2809117. The next prime is 2809141. The reversal of 2809125 is 5219082.

It is not a de Polignac number, because 2809125 - 2³ = 2809117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12262 + ... + 12488.

It is an arithmetic number, because the mean of its divisors is an integer number (115596).

2^2809125 is an apocalyptic number.

2809125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2809125 is a deficient number, since it is larger than the sum of its proper divisors (2739483).

2809125 is a wasteful number, since it uses less digits than its factorization.

2809125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 2809125 is about 1676.0444504845. The cubic root of 2809125 is about 141.0989195705.

The spelling of 2809125 in words is "two million, eight hundred nine thousand, one hundred twenty-five".