825309433 has 4 divisors (see below), whose sum is σ = 888794788. Its totient is φ = 761824080.

The previous prime is 825309413. The next prime is 825309451. The reversal of 825309433 is 334903528.

825309433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 124277904 + 701031529 = 11148^2 + 26477^2 .

It is a cyclic number.

It is not a de Polignac number, because 825309433 - 2⁹ = 825308921 is a prime.

It is a super-2 number, since 2×825309433² = 1362271320397562978, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 825309392 and 825309401.

It is not an unprimeable number, because it can be changed into a prime (825309413) 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, 31742658 + ... + 31742683.

It is an arithmetic number, because the mean of its divisors is an integer number (222198697).

Almost surely, 2^825309433 is an apocalyptic number.

It is an amenable number.

825309433 is a deficient number, since it is larger than the sum of its proper divisors (63485355).

825309433 is a wasteful number, since it uses less digits than its factorization.

825309433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63485354.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 825309433 is about 28728.1992648338. The cubic root of 825309433 is about 938.0059710963.

The spelling of 825309433 in words is "eight hundred twenty-five million, three hundred nine thousand, four hundred thirty-three".