25561801314 has 96 divisors (see below), whose sum is σ = 66879146880. Its totient is φ = 7165521792.

The previous prime is 25561801313. The next prime is 25561801333. The reversal of 25561801314 is 41310816552.

25561801314 is a `hidden beast` number, since 2 + 5 + 5 + 618 + 0 + 1 + 31 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (25561801313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 109422 + ... + 251190.

It is an arithmetic number, because the mean of its divisors is an integer number (696657780).

Almost surely, 2^25561801314 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25561801314, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33439573440).

25561801314 is an abundant number, since it is smaller than the sum of its proper divisors (41317345566).

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

25561801314 is a wasteful number, since it uses less digits than its factorization.

25561801314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141846 (or 141834 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 25561801314 in words is "twenty-five billion, five hundred sixty-one million, eight hundred one thousand, three hundred fourteen".