7825816 has 16 divisors (see below), whose sum is σ = 14738400. Its totient is φ = 3895584.

The previous prime is 7825813. The next prime is 7825823. The reversal of 7825816 is 6185287.

It is a super-2 number, since 2×7825816² = 122486792131712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7825813) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 135 + ... + 3958.

It is an arithmetic number, because the mean of its divisors is an integer number (921150).

Almost surely, 2^7825816 is an apocalyptic number.

It is an amenable number.

7825816 is a deficient number, since it is larger than the sum of its proper divisors (6912584).

7825816 is a wasteful number, since it uses less digits than its factorization.

7825816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338 (or 4334 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 7825816 is about 2797.4659962187. The cubic root of 7825816 is about 198.5378026124.

The spelling of 7825816 in words is "seven million, eight hundred twenty-five thousand, eight hundred sixteen".