25222878306684 has 72 divisors (see below), whose sum is σ = 64127243980800. Its totient is φ = 8359045632000.

The previous prime is 25222878306673. The next prime is 25222878306697. The reversal of 25222878306684 is 48660387822252.

It is a happy number.

25222878306684 is a `hidden beast` number, since 2 + 522 + 2 + 8 + 78 + 30 + 6 + 6 + 8 + 4 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1765509 + ... + 7318659.

It is an arithmetic number, because the mean of its divisors is an integer number (890656166400).

Almost surely, 2^{25222878306684} is an apocalyptic number.

It is an amenable number.

25222878306684 is an abundant number, since it is smaller than the sum of its proper divisors (38904365674116).

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

25222878306684 is a wasteful number, since it uses less digits than its factorization.

25222878306684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553891 (or 5553886 counting only the distinct ones).

The product of its (nonzero) digits is 123863040, while the sum is 63.

The spelling of 25222878306684 in words is "twenty-five trillion, two hundred twenty-two billion, eight hundred seventy-eight million, three hundred six thousand, six hundred eighty-four".