825231745 has 8 divisors (see below), whose sum is σ = 1066453416. Its totient is φ = 609401856.

The previous prime is 825231739. The next prime is 825231767. The reversal of 825231745 is 547132528.

It can be written as a sum of positive squares in 4 ways, for example, as 55890576 + 769341169 = 7476^2 + 27737^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 825231745 - 2⁹ = 825231233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6347872 + ... + 6348001.

It is an arithmetic number, because the mean of its divisors is an integer number (133306677).

Almost surely, 2^825231745 is an apocalyptic number.

It is an amenable number.

825231745 is a deficient number, since it is larger than the sum of its proper divisors (241221671).

825231745 is a wasteful number, since it uses less digits than its factorization.

825231745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12695891.

The product of its digits is 67200, while the sum is 37.

The square root of 825231745 is about 28726.8471120657. The cubic root of 825231745 is about 937.9765380571.

The spelling of 825231745 in words is "eight hundred twenty-five million, two hundred thirty-one thousand, seven hundred forty-five".