25555268860 has 96 divisors (see below), whose sum is σ = 59405734080. Its totient is φ = 9157017600.

The previous prime is 25555268839. The next prime is 25555268861. The reversal of 25555268860 is 6886255552.

It is a junction number, because it is equal to n+sod(n) for n = 25555268798 and 25555268807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25555268861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5140456 + ... + 5145424.

It is an arithmetic number, because the mean of its divisors is an integer number (618809730).

Almost surely, 2^25555268860 is an apocalyptic number.

25555268860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25555268860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29702867040).

25555268860 is an abundant number, since it is smaller than the sum of its proper divisors (33850465220).

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

25555268860 is a wasteful number, since it uses less digits than its factorization.

25555268860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5327 (or 5325 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 52.

The spelling of 25555268860 in words is "twenty-five billion, five hundred fifty-five million, two hundred sixty-eight thousand, eight hundred sixty".