7524725 has 24 divisors (see below), whose sum is σ = 10181640. Its totient is φ = 5516160.

The previous prime is 7524721. The next prime is 7524733. The reversal of 7524725 is 5274257.

7524725 = 163² + 164² + ... + 299².

It can be written as a sum of positive squares in 12 ways, for example, as 7447441 + 77284 = 2729^2 + 278^2 .

It is not a de Polignac number, because 7524725 - 2² = 7524721 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7524691 and 7524700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7524721) 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 23 ways as a sum of consecutive naturals, for example, 54857 + ... + 54993.

It is an arithmetic number, because the mean of its divisors is an integer number (424235).

Almost surely, 2^7524725 is an apocalyptic number.

It is an amenable number.

7524725 is a deficient number, since it is larger than the sum of its proper divisors (2656915).

7524725 is a wasteful number, since it uses less digits than its factorization.

7524725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 155 counting only the distinct ones).

The product of its digits is 19600, while the sum is 32.

The square root of 7524725 is about 2743.1232199812. The cubic root of 7524725 is about 195.9582463468.

The spelling of 7524725 in words is "seven million, five hundred twenty-four thousand, seven hundred twenty-five".