2425909 has 4 divisors (see below), whose sum is σ = 2465740. Its totient is φ = 2386080.

The previous prime is 2425897. The next prime is 2425921. The reversal of 2425909 is 9095242.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2425897) and next prime (2425921).

It can be written as a sum of positive squares in 2 ways, for example, as 184900 + 2241009 = 430^2 + 1497^2 .

It is a cyclic number.

It is not a de Polignac number, because 2425909 - 2¹³ = 2417717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2423909) 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, 19824 + ... + 19945.

It is an arithmetic number, because the mean of its divisors is an integer number (616435).

2^2425909 is an apocalyptic number.

It is an amenable number.

2425909 is a deficient number, since it is larger than the sum of its proper divisors (39831).

2425909 is an equidigital number, since it uses as much as digits as its factorization.

2425909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39830.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 2425909 is about 1557.5329852045. The cubic root of 2425909 is about 134.3666538173.

The spelling of 2425909 in words is "two million, four hundred twenty-five thousand, nine hundred nine".