2565528308 has 24 divisors (see below), whose sum is σ = 5168517312. Its totient is φ = 1091484864.

The previous prime is 2565528299. The next prime is 2565528341. The reversal of 2565528308 is 8038255652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330566 + ... + 338237.

It is an arithmetic number, because the mean of its divisors is an integer number (215354888).

Almost surely, 2^2565528308 is an apocalyptic number.

2565528308 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2565528308 is an abundant number, since it is smaller than the sum of its proper divisors (2602989004).

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

2565528308 is a wasteful number, since it uses less digits than its factorization.

2565528308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668951 (or 668949 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 44.

The square root of 2565528308 is about 50651.0444907111. The cubic root of 2565528308 is about 1368.9647653717.

The spelling of 2565528308 in words is "two billion, five hundred sixty-five million, five hundred twenty-eight thousand, three hundred eight".