25420358584168 has 16 divisors (see below), whose sum is σ = 47785699786500. Its totient is φ = 12677505307776.

The previous prime is 25420358584163. The next prime is 25420358584169. The reversal of 25420358584168 is 86148585302452.

It can be written as a sum of positive squares in 2 ways, for example, as 24898123999204 + 522234584964 = 4989802^2 + 722658^2 .

It is not an unprimeable number, because it can be changed into a prime (25420358584163) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4084244733 + ... + 4084250956.

Almost surely, 2^{25420358584168} is an apocalyptic number.

It is an amenable number.

25420358584168 is a deficient number, since it is larger than the sum of its proper divisors (22365341202332).

25420358584168 is a wasteful number, since it uses less digits than its factorization.

25420358584168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8168496084 (or 8168496080 counting only the distinct ones).

The product of its (nonzero) digits is 73728000, while the sum is 61.

The spelling of 25420358584168 in words is "twenty-five trillion, four hundred twenty billion, three hundred fifty-eight million, five hundred eighty-four thousand, one hundred sixty-eight".