2505527780 has 36 divisors (see below), whose sum is σ = 6120648828. Its totient is φ = 859037760.

The previous prime is 2505527767. The next prime is 2505527809. The reversal of 2505527780 is 877255052.

2505527780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1776959716 + 728568064 = 42154^2 + 26992^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1277351 + ... + 1279310.

It is an arithmetic number, because the mean of its divisors is an integer number (170018023).

Almost surely, 2^2505527780 is an apocalyptic number.

2505527780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2505527780 is an abundant number, since it is smaller than the sum of its proper divisors (3615121048).

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

2505527780 is a wasteful number, since it uses less digits than its factorization.

2505527780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556684 (or 2556675 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 41.

The square root of 2505527780 is about 50055.2472773834. The cubic root of 2505527780 is about 1358.2083854942.

The spelling of 2505527780 in words is "two billion, five hundred five million, five hundred twenty-seven thousand, seven hundred eighty".