2825709 has 4 divisors (see below), whose sum is σ = 3767616. Its totient is φ = 1883804.

The previous prime is 2825701. The next prime is 2825741. The reversal of 2825709 is 9075282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2825709 - 2³ = 2825701 is a prime.

It is an Ulam number.

It is a D-number.

2825709 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2825709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2825701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470949 + ... + 470954.

It is an arithmetic number, because the mean of its divisors is an integer number (941904).

2^2825709 is an apocalyptic number.

It is an amenable number.

2825709 is a deficient number, since it is larger than the sum of its proper divisors (941907).

2825709 is an equidigital number, since it uses as much as digits as its factorization.

2825709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941906.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 2825709 is about 1680.9845329449. The cubic root of 2825709 is about 141.3760396387.

The spelling of 2825709 in words is "two million, eight hundred twenty-five thousand, seven hundred nine".