25305527780 has 48 divisors (see below), whose sum is σ = 57796112304. Its totient is φ = 9251059200.

The previous prime is 25305527773. The next prime is 25305527783. The reversal of 25305527780 is 8772550352.

It can be written as a sum of positive squares in 8 ways, for example, as 120472576 + 25185055204 = 10976^2 + 158698^2 .

It is not an unprimeable number, because it can be changed into a prime (25305527783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 455567 + ... + 508086.

It is an arithmetic number, because the mean of its divisors is an integer number (1204085673).

Almost surely, 2^25305527780 is an apocalyptic number.

25305527780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25305527780 is an abundant number, since it is smaller than the sum of its proper divisors (32490584524).

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

25305527780 is a wasteful number, since it uses less digits than its factorization.

25305527780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963776 (or 963774 counting only the distinct ones).

The product of its (nonzero) digits is 588000, while the sum is 44.

The spelling of 25305527780 in words is "twenty-five billion, three hundred five million, five hundred twenty-seven thousand, seven hundred eighty".