2565681025 has 12 divisors (see below), whose sum is σ = 3221718400. Its totient is φ = 2026561680.

The previous prime is 2565681023. The next prime is 2565681031. The reversal of 2565681025 is 5201865652.

2565681025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2565681025 - 2¹ = 2565681023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2565681023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 647565 + ... + 651514.

Almost surely, 2^2565681025 is an apocalyptic number.

2565681025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2565681025 is a deficient number, since it is larger than the sum of its proper divisors (656037375).

2565681025 is a wasteful number, since it uses less digits than its factorization.

2565681025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299168 (or 1299163 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 40.

The square root of 2565681025 is about 50652.5520087587. The cubic root of 2565681025 is about 1368.9919280738.

The spelling of 2565681025 in words is "two billion, five hundred sixty-five million, six hundred eighty-one thousand, twenty-five".