2565750 has 64 divisors (see below), whose sum is σ = 7008768. Its totient is φ = 620000.

The previous prime is 2565713. The next prime is 2565757. The reversal of 2565750 is 575652.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565757) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8095 + ... + 8405.

It is an arithmetic number, because the mean of its divisors is an integer number (109512).

2^2565750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2565750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3504384).

2565750 is an abundant number, since it is smaller than the sum of its proper divisors (4443018).

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

2565750 is a wasteful number, since it uses less digits than its factorization.

2565750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 2565750 is about 1601.7958671441. The cubic root of 2565750 is about 136.9004195820.

It can be divided in two parts, 256 and 5750, that added together give a palindrome (6006).

The spelling of 2565750 in words is "two million, five hundred sixty-five thousand, seven hundred fifty".