825299799 has 8 divisors (see below), whose sum is σ = 1165129200. Its totient is φ = 517835136.

The previous prime is 825299779. The next prime is 825299803. The reversal of 825299799 is 997992528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 825299799 - 2²⁰ = 824251223 is a prime.

It is a super-4 number, since 4×825299799⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3, 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825299779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8091124 + ... + 8091225.

It is an arithmetic number, because the mean of its divisors is an integer number (145641150).

Almost surely, 2^825299799 is an apocalyptic number.

825299799 is a deficient number, since it is larger than the sum of its proper divisors (339829401).

825299799 is a wasteful number, since it uses less digits than its factorization.

825299799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16182369.

The product of its digits is 7348320, while the sum is 60.

The square root of 825299799 is about 28728.0315893728. The cubic root of 825299799 is about 938.0023212391.

The spelling of 825299799 in words is "eight hundred twenty-five million, two hundred ninety-nine thousand, seven hundred ninety-nine".