2565462221 has 8 divisors (see below), whose sum is σ = 2932263360. Its totient is φ = 2198737728.

The previous prime is 2565462203. The next prime is 2565462223. The reversal of 2565462221 is 1222645652.

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 2565462221 - 2⁶ = 2565462157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565462223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119045 + ... + 138933.

It is an arithmetic number, because the mean of its divisors is an integer number (366532920).

Almost surely, 2^2565462221 is an apocalyptic number.

It is an amenable number.

2565462221 is a deficient number, since it is larger than the sum of its proper divisors (366801139).

2565462221 is a wasteful number, since it uses less digits than its factorization.

2565462221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38323.

The product of its digits is 57600, while the sum is 35.

The square root of 2565462221 is about 50650.3921110192. The cubic root of 2565462221 is about 1368.9530106061.

The spelling of 2565462221 in words is "two billion, five hundred sixty-five million, four hundred sixty-two thousand, two hundred twenty-one".