25874214778 has 16 divisors (see below), whose sum is σ = 41172943680. Its totient is φ = 12152811456.

The previous prime is 25874214749. The next prime is 25874214791. The reversal of 25874214778 is 87741247852.

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, 709758 + ... + 745321.

It is an arithmetic number, because the mean of its divisors is an integer number (2573308980).

Almost surely, 2^25874214778 is an apocalyptic number.

25874214778 is a deficient number, since it is larger than the sum of its proper divisors (15298728902).

25874214778 is a wasteful number, since it uses less digits than its factorization.

25874214778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455621.

The product of its digits is 7024640, while the sum is 55.

The spelling of 25874214778 in words is "twenty-five billion, eight hundred seventy-four million, two hundred fourteen thousand, seven hundred seventy-eight".