2565761513 has 8 divisors (see below), whose sum is σ = 2932630080. Its totient is φ = 2198975760.

The previous prime is 2565761503. The next prime is 2565761551. The reversal of 2565761513 is 3151675652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2565761513 - 2¹⁴ = 2565745129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2565761503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75518 + ... + 104088.

It is an arithmetic number, because the mean of its divisors is an integer number (366578760).

Almost surely, 2^2565761513 is an apocalyptic number.

It is an amenable number.

2565761513 is a deficient number, since it is larger than the sum of its proper divisors (366868567).

2565761513 is a wasteful number, since it uses less digits than its factorization.

2565761513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41407.

The product of its digits is 189000, while the sum is 41.

The square root of 2565761513 is about 50653.3465133351. The cubic root of 2565761513 is about 1369.0062434764.

The spelling of 2565761513 in words is "two billion, five hundred sixty-five million, seven hundred sixty-one thousand, five hundred thirteen".