2257985 has 8 divisors (see below), whose sum is σ = 2720256. Its totient is φ = 1799280.

The previous prime is 2257961. The next prime is 2257987. The reversal of 2257985 is 5897522.

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

It is not a de Polignac number, because 2257985 - 2¹⁸ = 1995841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2257987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800 + ... + 2270.

It is an arithmetic number, because the mean of its divisors is an integer number (340032).

2^2257985 is an apocalyptic number.

It is an amenable number.

2257985 is a deficient number, since it is larger than the sum of its proper divisors (462271).

2257985 is a wasteful number, since it uses less digits than its factorization.

2257985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783.

The product of its digits is 50400, while the sum is 38.

The square root of 2257985 is about 1502.6593093579. The cubic root of 2257985 is about 131.1918986979.

The spelling of 2257985 in words is "two million, two hundred fifty-seven thousand, nine hundred eighty-five".