7525681928 has 12 divisors (see below), whose sum is σ = 14111113695. Its totient is φ = 3762718280.

The previous prime is 7525681921. The next prime is 7525681931. The reversal of 7525681928 is 8291865257.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 3762840964 + 3762840964 = 61342^2 + 61342^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=61342.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7525681928.

It is not an unprimeable number, because it can be changed into a prime (7525681921) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 230033 + ... + 260703.

Almost surely, 2^7525681928 is an apocalyptic number.

It is an amenable number.

7525681928 is a deficient number, since it is larger than the sum of its proper divisors (6585431767).

7525681928 is an frugal number, since it uses more digits than its factorization.

7525681928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61348 (or 30673 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 53.

The square root of 7525681928 is about 86750.6883430904. The cubic root of 7525681928 is about 1959.6655274044.

The spelling of 7525681928 in words is "seven billion, five hundred twenty-five million, six hundred eighty-one thousand, nine hundred twenty-eight".