2523605 has 8 divisors (see below), whose sum is σ = 3460992. Its totient is φ = 1730448.

The previous prime is 2523593. The next prime is 2523641. The reversal of 2523605 is 5063252.

It is a happy number.

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 2523605 - 2⁴ = 2523589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36017 + ... + 36086.

It is an arithmetic number, because the mean of its divisors is an integer number (432624).

2^2523605 is an apocalyptic number.

It is an amenable number.

2523605 is a deficient number, since it is larger than the sum of its proper divisors (937387).

2523605 is an equidigital number, since it uses as much as digits as its factorization.

2523605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72115.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 2523605 is about 1588.5858491123. The cubic root of 2523605 is about 136.1467022788.

Adding to 2523605 its reverse (5063252), we get a palindrome (7586857).

The spelling of 2523605 in words is "two million, five hundred twenty-three thousand, six hundred five".