2565522 has 12 divisors (see below), whose sum is σ = 5558670. Its totient is φ = 855168.

The previous prime is 2565463. The next prime is 2565559. The reversal of 2565522 is 2255652.

2565522 is a `hidden beast` number, since 2 + 5 + 655 + 2 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1418481 + 1147041 = 1191^2 + 1071^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71247 + ... + 71282.

2^2565522 is an apocalyptic number.

2565522 is an abundant number, since it is smaller than the sum of its proper divisors (2993148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2565522 is a wasteful number, since it uses less digits than its factorization.

2565522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142537 (or 142534 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 2565522 is about 1601.7246954455. The cubic root of 2565522 is about 136.8963643389.

It can be divided in two parts, 256 and 5522, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 2565522 in words is "two million, five hundred sixty-five thousand, five hundred twenty-two".