2565138514 has 8 divisors (see below), whose sum is σ = 3941554428. Its totient is φ = 1251287040.

The previous prime is 2565138497. The next prime is 2565138559. The reversal of 2565138514 is 4158315652.

It can be written as a sum of positive squares in 2 ways, for example, as 2560866025 + 4272489 = 50605^2 + 2067^2 .

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

It is a super-2 number, since 2×2565138514² = 13159871192012256392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15641007 + ... + 15641170.

Almost surely, 2^2565138514 is an apocalyptic number.

2565138514 is a deficient number, since it is larger than the sum of its proper divisors (1376415914).

2565138514 is a wasteful number, since it uses less digits than its factorization.

2565138514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31282220.

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

The square root of 2565138514 is about 50647.1965068157. The cubic root of 2565138514 is about 1368.8954305584.

It can be divided in two parts, 2565138 and 514, that added together give a palindrome (2565652).

The spelling of 2565138514 in words is "two billion, five hundred sixty-five million, one hundred thirty-eight thousand, five hundred fourteen".