725967688 has 8 divisors (see below), whose sum is σ = 1361189430. Its totient is φ = 362983840.

The previous prime is 725967679. The next prime is 725967719. The reversal of 725967688 is 886769527.

It can be written as a sum of positive squares in only one way, i.e., 707666404 + 18301284 = 26602^2 + 4278^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 45372973 + ... + 45372988.

Almost surely, 2^725967688 is an apocalyptic number.

It is an amenable number.

725967688 is a deficient number, since it is larger than the sum of its proper divisors (635221742).

725967688 is a wasteful number, since it uses less digits than its factorization.

725967688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90745967 (or 90745963 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 58.

The square root of 725967688 is about 26943.7875585449. The cubic root of 725967688 is about 898.7504007844.

It can be divided in two parts, 7259 and 67688, that added together give a palindrome (74947).

The spelling of 725967688 in words is "seven hundred twenty-five million, nine hundred sixty-seven thousand, six hundred eighty-eight".