825339811 has 4 divisors (see below), whose sum is σ = 825494824. Its totient is φ = 825184800.

The previous prime is 825339761. The next prime is 825339829. The reversal of 825339811 is 118933528.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 825339811 - 2²⁷ = 691122083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825339311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69225 + ... + 80266.

It is an arithmetic number, because the mean of its divisors is an integer number (206373706).

Almost surely, 2^825339811 is an apocalyptic number.

825339811 is a deficient number, since it is larger than the sum of its proper divisors (155013).

825339811 is a wasteful number, since it uses less digits than its factorization.

825339811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155012.

The product of its digits is 51840, while the sum is 40.

The square root of 825339811 is about 28728.7279739288. The cubic root of 825339811 is about 938.0174796669.

The spelling of 825339811 in words is "eight hundred twenty-five million, three hundred thirty-nine thousand, eight hundred eleven".