825764477 has 8 divisors (see below), whose sum is σ = 895664952. Its totient is φ = 758233600.

The previous prime is 825764461. The next prime is 825764497. The reversal of 825764477 is 774467528.

825764477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10719076 + 815045401 = 3274^2 + 28549^2 .

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 825764477 - 2⁴ = 825764461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825764417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591674 + ... + 593067.

It is an arithmetic number, because the mean of its divisors is an integer number (111958119).

Almost surely, 2^825764477 is an apocalyptic number.

It is an amenable number.

825764477 is a deficient number, since it is larger than the sum of its proper divisors (69900475).

825764477 is a wasteful number, since it uses less digits than its factorization.

825764477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184799.

The product of its digits is 2634240, while the sum is 50.

The square root of 825764477 is about 28736.1179876475. The cubic root of 825764477 is about 938.1783329400.

The spelling of 825764477 in words is "eight hundred twenty-five million, seven hundred sixty-four thousand, four hundred seventy-seven".