25775280780 has 48 divisors (see below), whose sum is σ = 72179165184. Its totient is φ = 6872610240.

The previous prime is 25775280767. The next prime is 25775280787. The reversal of 25775280780 is 8708257752.

It is not an unprimeable number, because it can be changed into a prime (25775280787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 644859 + ... + 683661.

It is an arithmetic number, because the mean of its divisors is an integer number (1503732608).

Almost surely, 2^25775280780 is an apocalyptic number.

25775280780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25775280780 is an abundant number, since it is smaller than the sum of its proper divisors (46403884404).

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

25775280780 is a wasteful number, since it uses less digits than its factorization.

25775280780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49886 (or 49884 counting only the distinct ones).

The product of its (nonzero) digits is 2195200, while the sum is 51.

The spelling of 25775280780 in words is "twenty-five billion, seven hundred seventy-five million, two hundred eighty thousand, seven hundred eighty".