825164477 has 4 divisors (see below), whose sum is σ = 842721216. Its totient is φ = 807607740.

The previous prime is 825164467. The next prime is 825164531. The reversal of 825164477 is 774461528.

825164477 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, 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 825164477 - 2¹² = 825160381 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 (825164437) 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, 8778299 + ... + 8778392.

It is an arithmetic number, because the mean of its divisors is an integer number (210680304).

Almost surely, 2^825164477 is an apocalyptic number.

It is an amenable number.

825164477 is a deficient number, since it is larger than the sum of its proper divisors (17556739).

825164477 is a wasteful number, since it uses less digits than its factorization.

825164477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17556738.

The product of its digits is 376320, while the sum is 44.

The square root of 825164477 is about 28725.6762670611. The cubic root of 825164477 is about 937.9510512689.

The spelling of 825164477 in words is "eight hundred twenty-five million, one hundred sixty-four thousand, four hundred seventy-seven".