825324999 has 16 divisors (see below), whose sum is σ = 1109623680. Its totient is φ = 545640480.

The previous prime is 825324953. The next prime is 825325003. The reversal of 825324999 is 999423528.

It is a happy number.

It is not a de Polignac number, because 825324999 - 2⁸ = 825324743 is a prime.

It is a super-2 number, since 2×825324999² = 1362322707948700002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825323999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193512 + ... + 197730.

It is an arithmetic number, because the mean of its divisors is an integer number (69351480).

Almost surely, 2^825324999 is an apocalyptic number.

825324999 is a deficient number, since it is larger than the sum of its proper divisors (284298681).

825324999 is a wasteful number, since it uses less digits than its factorization.

825324999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4750.

The product of its digits is 1399680, while the sum is 51.

The square root of 825324999 is about 28728.4701820337. The cubic root of 825324999 is about 938.0118682417.

The spelling of 825324999 in words is "eight hundred twenty-five million, three hundred twenty-four thousand, nine hundred ninety-nine".