2500405 has 8 divisors (see below), whose sum is σ = 3015072. Its totient is φ = 1990608.

The previous prime is 2500403. The next prime is 2500417. The reversal of 2500405 is 5040052.

It is a happy number.

2500405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2500405 - 2¹ = 2500403 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 (2500403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34 + ... + 2236.

It is an arithmetic number, because the mean of its divisors is an integer number (376884).

2^2500405 is an apocalyptic number.

It is an amenable number.

2500405 is a deficient number, since it is larger than the sum of its proper divisors (514667).

2500405 is a wasteful number, since it uses less digits than its factorization.

2500405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 2500405 is about 1581.2668971429. The cubic root of 2500405 is about 135.7282093616.

Adding to 2500405 its reverse (5040052), we get a palindrome (7540457).

The spelling of 2500405 in words is "two million, five hundred thousand, four hundred five".