25766673620 has 48 divisors (see below), whose sum is σ = 55996727808. Its totient is φ = 9948977280.

The previous prime is 25766673613. The next prime is 25766673641. The reversal of 25766673620 is 2637666752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193799 + ... + 298481.

It is an arithmetic number, because the mean of its divisors is an integer number (1166598496).

Almost surely, 2^25766673620 is an apocalyptic number.

25766673620 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 25766673620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27998363904).

25766673620 is an abundant number, since it is smaller than the sum of its proper divisors (30230054188).

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

25766673620 is a wasteful number, since it uses less digits than its factorization.

25766673620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105120 (or 105118 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 50.

The spelling of 25766673620 in words is "twenty-five billion, seven hundred sixty-six million, six hundred seventy-three thousand, six hundred twenty".