2257505 has 8 divisors (see below), whose sum is σ = 2802600. Its totient is φ = 1743616.

The previous prime is 2257487. The next prime is 2257511. The reversal of 2257505 is 5057522.

It can be written as a sum of positive squares in 4 ways, for example, as 160801 + 2096704 = 401^2 + 1448^2 .

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 2257505 - 2⁶ = 2257441 is a prime.

It is a Curzon 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, 7640 + ... + 7929.

It is an arithmetic number, because the mean of its divisors is an integer number (350325).

2^2257505 is an apocalyptic number.

It is an amenable number.

2257505 is a deficient number, since it is larger than the sum of its proper divisors (545095).

2257505 is a wasteful number, since it uses less digits than its factorization.

2257505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15603.

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 2257505 is about 1502.4995840266. The cubic root of 2257505 is about 131.1826018286.

The spelling of 2257505 in words is "two million, two hundred fifty-seven thousand, five hundred five".