25609276854 has 96 divisors (see below), whose sum is σ = 65162972160. Its totient is φ = 7116512256.

The previous prime is 25609276831. The next prime is 25609276873. The reversal of 25609276854 is 45867290652.

25609276854 is a `hidden beast` number, since 2 + 5 + 609 + 27 + 6 + 8 + 5 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 25609276854.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1285014 + ... + 1304790.

It is an arithmetic number, because the mean of its divisors is an integer number (678780960).

Almost surely, 2^25609276854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25609276854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32581486080).

25609276854 is an abundant number, since it is smaller than the sum of its proper divisors (39553695306).

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

25609276854 is a wasteful number, since it uses less digits than its factorization.

25609276854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20074 (or 20071 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 25609276854 in words is "twenty-five billion, six hundred nine million, two hundred seventy-six thousand, eight hundred fifty-four".