7725691089 has 64 divisors (see below), whose sum is σ = 12573792000. Its totient is φ = 4666475520.

The previous prime is 7725691081. The next prime is 7725691093. The reversal of 7725691089 is 9801965277.

7725691089 is a `hidden beast` number, since 7 + 72 + 569 + 1 + 0 + 8 + 9 = 666.

It is not a de Polignac number, because 7725691089 - 2³ = 7725691081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7725691081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6135742 + ... + 6137000.

It is an arithmetic number, because the mean of its divisors is an integer number (196465500).

Almost surely, 2^7725691089 is an apocalyptic number.

It is an amenable number.

7725691089 is a deficient number, since it is larger than the sum of its proper divisors (4848100911).

7725691089 is a wasteful number, since it uses less digits than its factorization.

7725691089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 54.

The square root of 7725691089 is about 87895.9105362701. The cubic root of 7725691089 is about 1976.8745617323.

The spelling of 7725691089 in words is "seven billion, seven hundred twenty-five million, six hundred ninety-one thousand, eighty-nine".