2525405 has 8 divisors (see below), whose sum is σ = 3047352. Its totient is φ = 2009088.

The previous prime is 2525389. The next prime is 2525417. The reversal of 2525405 is 5045252.

2525405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 582169 + 1943236 = 763^2 + 1394^2 .

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 2525405 - 2⁴ = 2525389 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

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, 344 + ... + 2273.

It is an arithmetic number, because the mean of its divisors is an integer number (380919).

2^2525405 is an apocalyptic number.

It is an amenable number.

2525405 is a deficient number, since it is larger than the sum of its proper divisors (521947).

2525405 is a wasteful number, since it uses less digits than its factorization.

2525405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 2525405 is about 1589.1522897444. The cubic root of 2525405 is about 136.1790641608.

The spelling of 2525405 in words is "two million, five hundred twenty-five thousand, four hundred five".