7838825 has 6 divisors (see below), whose sum is σ = 9720174. Its totient is φ = 6271040.

The previous prime is 7838807. The next prime is 7838839. The reversal of 7838825 is 5288387.

It can be written as a sum of positive squares in 3 ways, for example, as 1708249 + 6130576 = 1307^2 + 2476^2 .

It is not a de Polignac number, because 7838825 - 2⁸ = 7838569 is a prime.

It is a super-2 number, since 2×7838825² = 122894354761250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156752 + ... + 156801.

It is an arithmetic number, because the mean of its divisors is an integer number (1620029).

Almost surely, 2^7838825 is an apocalyptic number.

It is an amenable number.

7838825 is a deficient number, since it is larger than the sum of its proper divisors (1881349).

7838825 is a wasteful number, since it uses less digits than its factorization.

7838825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313563 (or 313558 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 7838825 is about 2799.7901707092. The cubic root of 7838825 is about 198.6477527425.

The spelling of 7838825 in words is "seven million, eight hundred thirty-eight thousand, eight hundred twenty-five".