2505423 has 4 divisors (see below), whose sum is σ = 3340568. Its totient is φ = 1670280.

The previous prime is 2505421. The next prime is 2505457. The reversal of 2505423 is 3245052.

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

It is not a de Polignac number, because 2505423 - 2¹ = 2505421 is a prime.

It is a D-number.

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 2505423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417568 + ... + 417573.

It is an arithmetic number, because the mean of its divisors is an integer number (835142).

2^2505423 is an apocalyptic number.

2505423 is a deficient number, since it is larger than the sum of its proper divisors (835145).

2505423 is an equidigital number, since it uses as much as digits as its factorization.

2505423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835144.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 2505423 is about 1582.8528042746. The cubic root of 2505423 is about 135.8189452017.

The spelling of 2505423 in words is "two million, five hundred five thousand, four hundred twenty-three".