2565412785 has 48 divisors (see below), whose sum is σ = 4815720000. Its totient is φ = 1255865472.

The previous prime is 2565412771. The next prime is 2565412789. The reversal of 2565412785 is 5872145652.

2565412785 is a `hidden beast` number, since 2 + 5 + 6 + 541 + 27 + 85 = 666.

2565412785 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 2565412785 - 2⁴ = 2565412769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 2565412785.

It is not an unprimeable number, because it can be changed into a prime (2565412789) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 92466 + ... + 116964.

It is an arithmetic number, because the mean of its divisors is an integer number (100327500).

Almost surely, 2^2565412785 is an apocalyptic number.

It is an amenable number.

2565412785 is a deficient number, since it is larger than the sum of its proper divisors (2250307215).

2565412785 is a wasteful number, since it uses less digits than its factorization.

2565412785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24702 (or 24699 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The square root of 2565412785 is about 50649.9040966516. The cubic root of 2565412785 is about 1368.9442173894.

The spelling of 2565412785 in words is "two billion, five hundred sixty-five million, four hundred twelve thousand, seven hundred eighty-five".