25775216780 has 24 divisors (see below), whose sum is σ = 54541151280. Its totient is φ = 10231382720.

The previous prime is 25775216773. The next prime is 25775216807. The reversal of 25775216780 is 8761257752.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4916315 + ... + 4921554.

It is an arithmetic number, because the mean of its divisors is an integer number (2272547970).

Almost surely, 2^25775216780 is an apocalyptic number.

25775216780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25775216780 is an abundant number, since it is smaller than the sum of its proper divisors (28765934500).

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

25775216780 is a wasteful number, since it uses less digits than its factorization.

25775216780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9838009 (or 9838007 counting only the distinct ones).

The product of its (nonzero) digits is 1646400, while the sum is 50.

The spelling of 25775216780 in words is "twenty-five billion, seven hundred seventy-five million, two hundred sixteen thousand, seven hundred eighty".