7785125 has 16 divisors (see below), whose sum is σ = 9884784. Its totient is φ = 6120000.

The previous prime is 7785103. The next prime is 7785131. The reversal of 7785125 is 5215877.

It can be written as a sum of positive squares in 8 ways, for example, as 4519876 + 3265249 = 2126^2 + 1807^2 .

It is not a de Polignac number, because 7785125 - 2⁸ = 7784869 is a prime.

It is a Duffinian number.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 7115 + ... + 8135.

It is an arithmetic number, because the mean of its divisors is an integer number (617799).

Almost surely, 2^7785125 is an apocalyptic number.

It is an amenable number.

7785125 is a deficient number, since it is larger than the sum of its proper divisors (2099659).

7785125 is a wasteful number, since it uses less digits than its factorization.

7785125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097 (or 1087 counting only the distinct ones).

The product of its digits is 19600, while the sum is 35.

The square root of 7785125 is about 2790.1836857096. The cubic root of 7785125 is about 198.1930997179.

The spelling of 7785125 in words is "seven million, seven hundred eighty-five thousand, one hundred twenty-five".