25960398650 has 24 divisors (see below), whose sum is σ = 48764433564. Its totient is φ = 10281344000.

The previous prime is 25960398637. The next prime is 25960398683. The reversal of 25960398650 is 5689306952.

It can be written as a sum of positive squares in 6 ways, for example, as 22775940889 + 3184457761 = 150917^2 + 56431^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25960398592 and 25960398601.

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 11 ways as a sum of consecutive naturals, for example, 2565287 + ... + 2575386.

Almost surely, 2^25960398650 is an apocalyptic number.

25960398650 is a deficient number, since it is larger than the sum of its proper divisors (22804034914).

25960398650 is a wasteful number, since it uses less digits than its factorization.

25960398650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5140786 (or 5140781 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 53.

The spelling of 25960398650 in words is "twenty-five billion, nine hundred sixty million, three hundred ninety-eight thousand, six hundred fifty".