25959120651 has 14 divisors (see below), whose sum is σ = 38920877460. Its totient is φ = 17306079948.

The previous prime is 25959120647. The next prime is 25959120661. The reversal of 25959120651 is 15602195952.

25959120651 is a `hidden beast` number, since 2 + 5 + 9 + 591 + 2 + 0 + 6 + 51 = 666.

It is not a de Polignac number, because 25959120651 - 2² = 25959120647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25959120597 and 25959120606.

It is not an unprimeable number, because it can be changed into a prime (25959120601) 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 13 ways as a sum of consecutive naturals, for example, 17803881 + ... + 17805338.

Almost surely, 2^25959120651 is an apocalyptic number.

25959120651 is a deficient number, since it is larger than the sum of its proper divisors (12961756809).

25959120651 is an frugal number, since it uses more digits than its factorization.

25959120651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35609237 (or 35609222 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 25959120651 in words is "twenty-five billion, nine hundred fifty-nine million, one hundred twenty thousand, six hundred fifty-one".