25422400066660 has 48 divisors (see below), whose sum is σ = 56243990880000. Its totient is φ = 9625676200704.

The previous prime is 25422400066633. The next prime is 25422400066727. The reversal of 25422400066660 is 6666000422452.

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 15 ways as a sum of consecutive naturals, for example, 27585660 + ... + 28492339.

It is an arithmetic number, because the mean of its divisors is an integer number (1171749810000).

Almost surely, 2^{25422400066660} is an apocalyptic number.

25422400066660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25422400066660 is an abundant number, since it is smaller than the sum of its proper divisors (30821590813340).

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

25422400066660 is a wasteful number, since it uses less digits than its factorization.

25422400066660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56079220 (or 56079218 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 25422400066660 in words is "twenty-five trillion, four hundred twenty-two billion, four hundred million, sixty-six thousand, six hundred sixty".