25778306080 has 24 divisors (see below), whose sum is σ = 60901248492. Its totient is φ = 10311322368.

The previous prime is 25778306077. The next prime is 25778306111. The reversal of 25778306080 is 8060387752.

It can be written as a sum of positive squares in 2 ways, for example, as 25145079184 + 633226896 = 158572^2 + 25164^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25778306080.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80557047 + ... + 80557366.

Almost surely, 2^25778306080 is an apocalyptic number.

25778306080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25778306080 is an abundant number, since it is smaller than the sum of its proper divisors (35122942412).

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

25778306080 is a wasteful number, since it uses less digits than its factorization.

25778306080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161114428 (or 161114420 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 25778306080 in words is "twenty-five billion, seven hundred seventy-eight million, three hundred six thousand, eighty".