25667266880 has 28 divisors (see below), whose sum is σ = 61120180020. Its totient is φ = 10266906624.

The previous prime is 25667266861. The next prime is 25667266883. The reversal of 25667266880 is 8866276652.

It can be written as a sum of positive squares in 2 ways, for example, as 5919148096 + 19748118784 = 76936^2 + 140528^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25667266883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40104785 + ... + 40105424.

Almost surely, 2^25667266880 is an apocalyptic number.

25667266880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25667266880 is an abundant number, since it is smaller than the sum of its proper divisors (35452913140).

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

25667266880 is an equidigital number, since it uses as much as digits as its factorization.

25667266880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80210226 (or 80210216 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 56.

The spelling of 25667266880 in words is "twenty-five billion, six hundred sixty-seven million, two hundred sixty-six thousand, eight hundred eighty".