7825385 has 8 divisors (see below), whose sum is σ = 9544776. Its totient is φ = 6157440.

The previous prime is 7825373. The next prime is 7825403. The reversal of 7825385 is 5835287.

7825385 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 52441 + 7772944 = 229^2 + 2788^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7825385 - 2⁴ = 7825369 is a prime.

It is a super-2 number, since 2×7825385² = 122473300796450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12524 + ... + 13133.

It is an arithmetic number, because the mean of its divisors is an integer number (1193097).

Almost surely, 2^7825385 is an apocalyptic number.

It is an amenable number.

7825385 is a deficient number, since it is larger than the sum of its proper divisors (1719391).

7825385 is a wasteful number, since it uses less digits than its factorization.

7825385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25723.

The product of its digits is 67200, while the sum is 38.

The square root of 7825385 is about 2797.3889611565. The cubic root of 7825385 is about 198.5341577800.

The spelling of 7825385 in words is "seven million, eight hundred twenty-five thousand, three hundred eighty-five".