2565531212 has 24 divisors (see below), whose sum is σ = 4603087440. Its totient is φ = 1250416640.

The previous prime is 2565531211. The next prime is 2565531233. The reversal of 2565531212 is 2121355652.

2565531212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2565531211) 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, 208364 + ... + 220332.

It is an arithmetic number, because the mean of its divisors is an integer number (191795310).

Almost surely, 2^2565531212 is an apocalyptic number.

It is an amenable number.

2565531212 is a deficient number, since it is larger than the sum of its proper divisors (2037556228).

2565531212 is a wasteful number, since it uses less digits than its factorization.

2565531212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13321 (or 13319 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The square root of 2565531212 is about 50651.0731574367. The cubic root of 2565531212 is about 1368.9652818959.

Adding to 2565531212 its reverse (2121355652), we get a palindrome (4686886864).

The spelling of 2565531212 in words is "two billion, five hundred sixty-five million, five hundred thirty-one thousand, two hundred twelve".