825242519 has 2 divisors, whose sum is σ = 825242520. Its totient is φ = 825242518.

The previous prime is 825242513. The next prime is 825242521. The reversal of 825242519 is 915242528.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 825242519 - 2¹⁶ = 825176983 is a prime.

It is a super-2 number, since 2×825242519² = 1362050430330930722, which contains 22 as substring.

Together with 825242521, 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 (825242513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412621259 + 412621260.

It is an arithmetic number, because the mean of its divisors is an integer number (412621260).

Almost surely, 2^825242519 is an apocalyptic number.

825242519 is a deficient number, since it is larger than the sum of its proper divisors (1).

825242519 is an equidigital number, since it uses as much as digits as its factorization.

825242519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 38.

The square root of 825242519 is about 28727.0346363839. The cubic root of 825242519 is about 937.9806200278.

Subtracting 825242519 from its reverse (915242528), we obtain a palindrome (90000009).

The spelling of 825242519 in words is "eight hundred twenty-five million, two hundred forty-two thousand, five hundred nineteen".