7478125 has 12 divisors (see below), whose sum is σ = 9350964. Its totient is φ = 5980000.

The previous prime is 7478117. The next prime is 7478129. The reversal of 7478125 is 5218747.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 7387524 + 90601 = 2718^2 + 301^2 .

It is not a de Polignac number, because 7478125 - 2³ = 7478117 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

7478125 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7478129) by changing a digit.

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, 1929 + ... + 4321.

It is an arithmetic number, because the mean of its divisors is an integer number (779247).

Almost surely, 2^7478125 is an apocalyptic number.

It is an amenable number.

7478125 is a deficient number, since it is larger than the sum of its proper divisors (1872839).

7478125 is an frugal number, since it uses more digits than its factorization.

7478125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418 (or 2398 counting only the distinct ones).

The product of its digits is 15680, while the sum is 34.

The square root of 7478125 is about 2734.6160608027. The cubic root of 7478125 is about 195.5528906724.

The spelling of 7478125 in words is "seven million, four hundred seventy-eight thousand, one hundred twenty-five".