2425639 has 4 divisors (see below), whose sum is σ = 2431000. Its totient is φ = 2420280.

The previous prime is 2425637. The next prime is 2425663. The reversal of 2425639 is 9365242.

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

It is a cyclic number.

It is not a de Polignac number, because 2425639 - 2¹ = 2425637 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 4⁹ + 2²¹ + 5 + 6³ + 3¹⁰ + 9⁴ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2425639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2425637) 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, 1932 + ... + 2929.

It is an arithmetic number, because the mean of its divisors is an integer number (607750).

2^2425639 is an apocalyptic number.

2425639 is a deficient number, since it is larger than the sum of its proper divisors (5361).

2425639 is an equidigital number, since it uses as much as digits as its factorization.

2425639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5360.

The product of its digits is 12960, while the sum is 31.

The square root of 2425639 is about 1557.4463072607. The cubic root of 2425639 is about 134.3616686973.

The spelling of 2425639 in words is "two million, four hundred twenty-five thousand, six hundred thirty-nine".