25308340886280 has 128 divisors (see below), whose sum is σ = 76638613708800. Its totient is φ = 6685641081600.

The previous prime is 25308340886251. The next prime is 25308340886281. The reversal of 25308340886280 is 8268804380352.

It is a self number, because there is not a number n which added to its sum of digits gives 25308340886280.

It is not an unprimeable number, because it can be changed into a prime (25308340886281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7566361 + ... + 10385879.

It is an arithmetic number, because the mean of its divisors is an integer number (598739169600).

Almost surely, 2^{25308340886280} is an apocalyptic number.

25308340886280 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 25308340886280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38319306854400).

25308340886280 is an abundant number, since it is smaller than the sum of its proper divisors (51330272822520).

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

25308340886280 is a wasteful number, since it uses less digits than its factorization.

25308340886280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820235 (or 2820231 counting only the distinct ones).

The product of its (nonzero) digits is 17694720, while the sum is 57.

The spelling of 25308340886280 in words is "twenty-five trillion, three hundred eight billion, three hundred forty million, eight hundred eighty-six thousand, two hundred eighty".