25996822471665 has 24 divisors (see below), whose sum is σ = 45062797366080. Its totient is φ = 13864467857184.

The previous prime is 25996822471649. The next prime is 25996822471687. The reversal of 25996822471665 is 56617422869952.

25996822471665 is a `hidden beast` number, since 2 + 5 + 9 + 96 + 8 + 2 + 2 + 471 + 6 + 65 = 666.

It is not a de Polignac number, because 25996822471665 - 2⁴ = 25996822471649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25996822471593 and 25996822471602.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9249637 + ... + 11728146.

It is an arithmetic number, because the mean of its divisors is an integer number (1877616556920).

Almost surely, 2^{25996822471665} is an apocalyptic number.

It is an amenable number.

25996822471665 is a deficient number, since it is larger than the sum of its proper divisors (19065974894415).

25996822471665 is a wasteful number, since it uses less digits than its factorization.

25996822471665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21005333 (or 21005330 counting only the distinct ones).

The product of its digits is 783820800, while the sum is 72.

The spelling of 25996822471665 in words is "twenty-five trillion, nine hundred ninety-six billion, eight hundred twenty-two million, four hundred seventy-one thousand, six hundred sixty-five".