2870825 has 6 divisors (see below), whose sum is σ = 3559854. Its totient is φ = 2296640.

The previous prime is 2870821. The next prime is 2870831. The reversal of 2870825 is 5280782.

It can be written as a sum of positive squares in 3 ways, for example, as 34969 + 2835856 = 187^2 + 1684^2 .

It is not a de Polignac number, because 2870825 - 2² = 2870821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2870791 and 2870800.

It is not an unprimeable number, because it can be changed into a prime (2870821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57392 + ... + 57441.

It is an arithmetic number, because the mean of its divisors is an integer number (593309).

2^2870825 is an apocalyptic number.

2870825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2870825 is a deficient number, since it is larger than the sum of its proper divisors (689029).

2870825 is a wasteful number, since it uses less digits than its factorization.

2870825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114843 (or 114838 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2870825 is about 1694.3509081651. The cubic root of 2870825 is about 142.1244858240.

The spelling of 2870825 in words is "two million, eight hundred seventy thousand, eight hundred twenty-five".