7825999 has 2 divisors, whose sum is σ = 7826000. Its totient is φ = 7825998.

The previous prime is 7825997. The next prime is 7826023. The reversal of 7825999 is 9995287.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7825999 - 2¹ = 7825997 is a prime.

It is a super-2 number, since 2×7825999² = 122492520696002, which contains 22 as substring.

Together with 7825997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7825991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3912999 + 3913000.

It is an arithmetic number, because the mean of its divisors is an integer number (3913000).

Almost surely, 2^7825999 is an apocalyptic number.

7825999 is a deficient number, since it is larger than the sum of its proper divisors (1).

7825999 is an equidigital number, since it uses as much as digits as its factorization.

7825999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 49.

The square root of 7825999 is about 2797.4987041999. The cubic root of 7825999 is about 198.5393501458.

The spelling of 7825999 in words is "seven million, eight hundred twenty-five thousand, nine hundred ninety-nine".