2125505 has 4 divisors (see below), whose sum is σ = 2550612. Its totient is φ = 1700400.

The previous prime is 2125477. The next prime is 2125517. The reversal of 2125505 is 5055212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1560001 + 565504 = 1249^2 + 752^2 .

It is not a de Polignac number, because 2125505 - 2¹⁸ = 1863361 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 3 ways as a sum of consecutive naturals, for example, 212546 + ... + 212555.

It is an arithmetic number, because the mean of its divisors is an integer number (637653).

2^2125505 is an apocalyptic number.

It is an amenable number.

2125505 is a deficient number, since it is larger than the sum of its proper divisors (425107).

2125505 is an equidigital number, since it uses as much as digits as its factorization.

2125505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425106.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 2125505 is about 1457.9111769926. The cubic root of 2125505 is about 128.5742630181.

The spelling of 2125505 in words is "two million, one hundred twenty-five thousand, five hundred five".