2565051625 has 8 divisors (see below), whose sum is σ = 3201184584. Its totient is φ = 2052041200.

The previous prime is 2565051611. The next prime is 2565051637. The reversal of 2565051625 is 5261505652.

2565051625 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 4 ways, for example, as 529598169 + 2035453456 = 23013^2 + 45116^2 .

It is not a de Polignac number, because 2565051625 - 2⁹ = 2565051113 is a prime.

It is a Duffinian 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, 10260082 + ... + 10260331.

It is an arithmetic number, because the mean of its divisors is an integer number (400148073).

Almost surely, 2^2565051625 is an apocalyptic number.

2565051625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2565051625 is a deficient number, since it is larger than the sum of its proper divisors (636132959).

2565051625 is an equidigital number, since it uses as much as digits as its factorization.

2565051625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20520428 (or 20520418 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 2565051625 is about 50646.3387126848. The cubic root of 2565051625 is about 1368.8799741743.

The spelling of 2565051625 in words is "two billion, five hundred sixty-five million, fifty-one thousand, six hundred twenty-five".