25791997868830 has 16 divisors (see below), whose sum is σ = 46464707892240. Its totient is φ = 10308107652352.

The previous prime is 25791997868803. The next prime is 25791997868849. The reversal of 25791997868830 is 3886879919752.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1086424435 + ... + 1086448174.

It is an arithmetic number, because the mean of its divisors is an integer number (2904044243265).

Almost surely, 2^{25791997868830} is an apocalyptic number.

25791997868830 is a deficient number, since it is larger than the sum of its proper divisors (20672710023410).

25791997868830 is a wasteful number, since it uses less digits than its factorization.

25791997868830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172873803.

The product of its (nonzero) digits is 3292047360, while the sum is 82.

The spelling of 25791997868830 in words is "twenty-five trillion, seven hundred ninety-one billion, nine hundred ninety-seven million, eight hundred sixty-eight thousand, eight hundred thirty".