2565266434 has 8 divisors (see below), whose sum is σ = 3941750988. Its totient is φ = 1251349440.

The previous prime is 2565266401. The next prime is 2565266443. The reversal of 2565266434 is 4346625652.

It can be written as a sum of positive squares in 2 ways, for example, as 2038793409 + 526473025 = 45153^2 + 22945^2 .

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

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, 15641787 + ... + 15641950.

Almost surely, 2^2565266434 is an apocalyptic number.

2565266434 is a deficient number, since it is larger than the sum of its proper divisors (1376484554).

2565266434 is a wasteful number, since it uses less digits than its factorization.

2565266434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31283780.

The product of its digits is 1036800, while the sum is 43.

The square root of 2565266434 is about 50648.4593447817. The cubic root of 2565266434 is about 1368.9181851701.

The spelling of 2565266434 in words is "two billion, five hundred sixty-five million, two hundred sixty-six thousand, four hundred thirty-four".