7688782525 has 24 divisors (see below), whose sum is σ = 10108609704. Its totient is φ = 5781350400.

The previous prime is 7688782513. The next prime is 7688782531. The reversal of 7688782525 is 5252878867.

It can be written as a sum of positive squares in 12 ways, for example, as 4655196441 + 3033586084 = 68229^2 + 55078^2 .

It is not a de Polignac number, because 7688782525 - 2²¹ = 7686685373 is a prime.

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 7688782525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 311539 + ... + 335311.

It is an arithmetic number, because the mean of its divisors is an integer number (421192071).

Almost surely, 2^7688782525 is an apocalyptic number.

It is an amenable number.

7688782525 is a deficient number, since it is larger than the sum of its proper divisors (2419827179).

7688782525 is a wasteful number, since it uses less digits than its factorization.

7688782525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24561 (or 24556 counting only the distinct ones).

The product of its digits is 15052800, while the sum is 58.

The square root of 7688782525 is about 87685.7030820874. The cubic root of 7688782525 is about 1973.7214413434.

The spelling of 7688782525 in words is "seven billion, six hundred eighty-eight million, seven hundred eighty-two thousand, five hundred twenty-five".