825803057 has 4 divisors (see below), whose sum is σ = 826222320. Its totient is φ = 825383796.

The previous prime is 825803053. The next prime is 825803071. The reversal of 825803057 is 750308528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 825803057 - 2² = 825803053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 825803057.

It is not an unprimeable number, because it can be changed into a prime (825803051) 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, 206663 + ... + 210620.

It is an arithmetic number, because the mean of its divisors is an integer number (206555580).

Almost surely, 2^825803057 is an apocalyptic number.

It is an amenable number.

825803057 is a deficient number, since it is larger than the sum of its proper divisors (419263).

825803057 is a wasteful number, since it uses less digits than its factorization.

825803057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419262.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 825803057 is about 28736.7892604584. The cubic root of 825803057 is about 938.1929433838.

The spelling of 825803057 in words is "eight hundred twenty-five million, eight hundred three thousand, fifty-seven".