2565527520 has 48 divisors (see below), whose sum is σ = 8081413200. Its totient is φ = 684140544.

The previous prime is 2565527519. The next prime is 2565527527. The reversal of 2565527520 is 257255652.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565527527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2671945 + ... + 2672904.

It is an arithmetic number, because the mean of its divisors is an integer number (168362775).

Almost surely, 2^2565527520 is an apocalyptic number.

2565527520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2565527520 is an abundant number, since it is smaller than the sum of its proper divisors (5515885680).

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

2565527520 is a wasteful number, since it uses less digits than its factorization.

2565527520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5344867 (or 5344859 counting only the distinct ones).

The product of its (nonzero) digits is 210000, while the sum is 39.

The square root of 2565527520 is about 50651.0367119963. The cubic root of 2565527520 is about 1368.9646252129.

The spelling of 2565527520 in words is "two billion, five hundred sixty-five million, five hundred twenty-seven thousand, five hundred twenty".