7825247 has 2 divisors, whose sum is σ = 7825248. Its totient is φ = 7825246.

The previous prime is 7825217. The next prime is 7825249. The reversal of 7825247 is 7425287.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7825247 - 2²² = 3630943 is a prime.

It is a super-2 number, since 2×7825247² = 122468981222018, which contains 22 as substring.

Together with 7825249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7825249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3912623 + 3912624.

It is an arithmetic number, because the mean of its divisors is an integer number (3912624).

Almost surely, 2^7825247 is an apocalyptic number.

7825247 is a deficient number, since it is larger than the sum of its proper divisors (1).

7825247 is an equidigital number, since it uses as much as digits as its factorization.

7825247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31360, while the sum is 35.

The square root of 7825247 is about 2797.3642951893. The cubic root of 7825247 is about 198.5329907288.

The spelling of 7825247 in words is "seven million, eight hundred twenty-five thousand, two hundred forty-seven".