2857825 has 12 divisors (see below), whose sum is σ = 3591040. Its totient is φ = 2255760.

The previous prime is 2857801. The next prime is 2857831. The reversal of 2857825 is 5287582.

It is not a de Polignac number, because 2857825 - 2⁷ = 2857697 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1252 + ... + 2698.

2^2857825 is an apocalyptic number.

2857825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2857825 is a deficient number, since it is larger than the sum of its proper divisors (733215).

2857825 is a wasteful number, since it uses less digits than its factorization.

2857825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536 (or 1531 counting only the distinct ones).

The product of its digits is 44800, while the sum is 37.

The square root of 2857825 is about 1690.5102779930. The cubic root of 2857825 is about 141.9096330414.

It can be divided in two parts, 28 and 57825, that multiplied together give a triangular number (1619100 = T₁₇₉₉).

The spelling of 2857825 in words is "two million, eight hundred fifty-seven thousand, eight hundred twenty-five".