825949519 has 2 divisors, whose sum is σ = 825949520. Its totient is φ = 825949518.

The previous prime is 825949511. The next prime is 825949541. The reversal of 825949519 is 915949528.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 825949519 - 2³ = 825949511 is a prime.

It is a super-2 number, since 2×825949519² = 1364385215872662722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825949511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412974759 + 412974760.

It is an arithmetic number, because the mean of its divisors is an integer number (412974760).

Almost surely, 2^825949519 is an apocalyptic number.

825949519 is a deficient number, since it is larger than the sum of its proper divisors (1).

825949519 is an equidigital number, since it uses as much as digits as its factorization.

825949519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 52.

The square root of 825949519 is about 28739.3374836651. The cubic root of 825949519 is about 938.2484051515.

Subtracting 825949519 from its reverse (915949528), we obtain a palindrome (90000009).

The spelling of 825949519 in words is "eight hundred twenty-five million, nine hundred forty-nine thousand, five hundred nineteen".