7481125 has 16 divisors (see below), whose sum is σ = 9447984. Its totient is φ = 5913600.

The previous prime is 7481107. The next prime is 7481143. The reversal of 7481125 is 5211847.

It is an interprime number because it is at equal distance from previous prime (7481107) and next prime (7481143).

It can be written as a sum of positive squares in 8 ways, for example, as 4866436 + 2614689 = 2206^2 + 1617^2 .

It is not a de Polignac number, because 7481125 - 2⁵ = 7481093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7481093 and 7481102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11817 + ... + 12433.

It is an arithmetic number, because the mean of its divisors is an integer number (590499).

Almost surely, 2^7481125 is an apocalyptic number.

It is an amenable number.

7481125 is a deficient number, since it is larger than the sum of its proper divisors (1966859).

7481125 is an equidigital number, since it uses as much as digits as its factorization.

7481125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 719 counting only the distinct ones).

The product of its digits is 2240, while the sum is 28.

The square root of 7481125 is about 2735.1645288721. The cubic root of 7481125 is about 195.5790371659.

The spelling of 7481125 in words is "seven million, four hundred eighty-one thousand, one hundred twenty-five".