7825904 has 30 divisors (see below), whose sum is σ = 15563736. Its totient is φ = 3811360.

The previous prime is 7825903. The next prime is 7825921. The reversal of 7825904 is 4095287.

It is a happy number.

It is a super-2 number, since 2×7825904² = 122489546834432, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7825903) 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, 94247 + ... + 94329.

Almost surely, 2^7825904 is an apocalyptic number.

It is an amenable number.

7825904 is a deficient number, since it is larger than the sum of its proper divisors (7737832).

7825904 is an equidigital number, since it uses as much as digits as its factorization.

7825904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 7825904 is about 2797.4817246946. The cubic root of 7825904 is about 198.5385467845.

The spelling of 7825904 in words is "seven million, eight hundred twenty-five thousand, nine hundred four".