25725616706 has 16 divisors (see below), whose sum is σ = 40597978680. Its totient is φ = 12209915520.

The previous prime is 25725616663. The next prime is 25725616717. The reversal of 25725616706 is 60761652752.

It can be written as a sum of positive squares in 4 ways, for example, as 21182182681 + 4543434025 = 145541^2 + 67405^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4236521 + ... + 4242588.

Almost surely, 2^25725616706 is an apocalyptic number.

25725616706 is a deficient number, since it is larger than the sum of its proper divisors (14872361974).

25725616706 is a wasteful number, since it uses less digits than its factorization.

25725616706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8479189.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 25725616706 in words is "twenty-five billion, seven hundred twenty-five million, six hundred sixteen thousand, seven hundred six".