2565290 has 32 divisors (see below), whose sum is σ = 5685120. Its totient is φ = 811584.

The previous prime is 2565289. The next prime is 2565319. The reversal of 2565290 is 925652.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500 + ... + 2319.

It is an arithmetic number, because the mean of its divisors is an integer number (177660).

2^2565290 is an apocalyptic number.

2565290 is an abundant number, since it is smaller than the sum of its proper divisors (3119830).

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

2565290 is a wasteful number, since it uses less digits than its factorization.

2565290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 2565290 is about 1601.6522718743. The cubic root of 2565290 is about 136.8922377045.

The spelling of 2565290 in words is "two million, five hundred sixty-five thousand, two hundred ninety".