25413514218978 has 32 divisors (see below), whose sum is σ = 50886896686080. Its totient is φ = 8461194774480.

The previous prime is 25413514218973. The next prime is 25413514219099. The reversal of 25413514218978 is 87981241531452.

It is not an unprimeable number, because it can be changed into a prime (25413514218973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75099483 + ... + 75437121.

It is an arithmetic number, because the mean of its divisors is an integer number (1590215521440).

Almost surely, 2^{25413514218978} is an apocalyptic number.

25413514218978 is an abundant number, since it is smaller than the sum of its proper divisors (25473382467102).

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

25413514218978 is a wasteful number, since it uses less digits than its factorization.

25413514218978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352382.

The product of its digits is 19353600, while the sum is 60.

The spelling of 25413514218978 in words is "twenty-five trillion, four hundred thirteen billion, five hundred fourteen million, two hundred eighteen thousand, nine hundred seventy-eight".