25891377360 has 40 divisors (see below), whose sum is σ = 80263270560. Its totient is φ = 6904367232.

The previous prime is 25891377353. The next prime is 25891377361. The reversal of 25891377360 is 6377319852.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25891377361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53940130 + ... + 53940609.

It is an arithmetic number, because the mean of its divisors is an integer number (2006581764).

Almost surely, 2^25891377360 is an apocalyptic number.

25891377360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25891377360 is an abundant number, since it is smaller than the sum of its proper divisors (54371893200).

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

25891377360 is a wasteful number, since it uses less digits than its factorization.

25891377360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107880755 (or 107880749 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 51.

The spelling of 25891377360 in words is "twenty-five billion, eight hundred ninety-one million, three hundred seventy-seven thousand, three hundred sixty".