823650725 has 6 divisors (see below), whose sum is σ = 1021326930. Its totient is φ = 658920560.

The previous prime is 823650691. The next prime is 823650733. The reversal of 823650725 is 527056328.

It can be written as a sum of positive squares in 3 ways, for example, as 9746884 + 813903841 = 3122^2 + 28529^2 .

It is not a de Polignac number, because 823650725 - 2¹⁸ = 823388581 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16472990 + ... + 16473039.

It is an arithmetic number, because the mean of its divisors is an integer number (170221155).

Almost surely, 2^823650725 is an apocalyptic number.

It is an amenable number.

823650725 is a deficient number, since it is larger than the sum of its proper divisors (197676205).

823650725 is a wasteful number, since it uses less digits than its factorization.

823650725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32946039 (or 32946034 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 823650725 is about 28699.3157583940. The cubic root of 823650725 is about 937.3771477537.

The spelling of 823650725 in words is "eight hundred twenty-three million, six hundred fifty thousand, seven hundred twenty-five".