7810825 has 12 divisors (see below), whose sum is σ = 10566288. Its totient is φ = 5680400.

The previous prime is 7810819. The next prime is 7810841. The reversal of 7810825 is 5280187.

It is not a de Polignac number, because 7810825 - 2⁷ = 7810697 is a prime.

It is a super-2 number, since 2×7810825² = 122017974361250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13927 + ... + 14476.

It is an arithmetic number, because the mean of its divisors is an integer number (880524).

Almost surely, 2^7810825 is an apocalyptic number.

It is an amenable number.

7810825 is a deficient number, since it is larger than the sum of its proper divisors (2755463).

7810825 is a wasteful number, since it uses less digits than its factorization.

7810825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28424 (or 28419 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 7810825 is about 2794.7853227037. The cubic root of 7810825 is about 198.4109496997.

It can be divided in two parts, 78 and 10825, that multiplied together give a triangular number (844350 = T₁₂₉₉).

The spelling of 7810825 in words is "seven million, eight hundred ten thousand, eight hundred twenty-five".