25846651980 has 72 divisors (see below), whose sum is σ = 79282476000. Its totient is φ = 6814993152.

The previous prime is 25846651979. The next prime is 25846652011. The reversal of 25846651980 is 8915664852.

25846651980 is a `hidden beast` number, since 2 + 5 + 8 + 46 + 6 + 519 + 80 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 790680 + ... + 822719.

It is an arithmetic number, because the mean of its divisors is an integer number (1101145500).

Almost surely, 2^25846651980 is an apocalyptic number.

25846651980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25846651980 is an abundant number, since it is smaller than the sum of its proper divisors (53435824020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25846651980 is a wasteful number, since it uses less digits than its factorization.

25846651980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613503 (or 1613498 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 25846651980 in words is "twenty-five billion, eight hundred forty-six million, six hundred fifty-one thousand, nine hundred eighty".