25554216894 has 16 divisors (see below), whose sum is σ = 51112261632. Its totient is φ = 8517434328.

The previous prime is 25554216869. The next prime is 25554216901. The reversal of 25554216894 is 49861245552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68734 + ... + 236289.

It is an arithmetic number, because the mean of its divisors is an integer number (3194516352).

Almost surely, 2^25554216894 is an apocalyptic number.

25554216894 is an abundant number, since it is smaller than the sum of its proper divisors (25558044738).

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

25554216894 is a wasteful number, since it uses less digits than its factorization.

25554216894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318991.

The product of its digits is 3456000, while the sum is 51.

The spelling of 25554216894 in words is "twenty-five billion, five hundred fifty-four million, two hundred sixteen thousand, eight hundred ninety-four".