822729825 has 24 divisors (see below), whose sum is σ = 1511386400. Its totient is φ = 438788880.

The previous prime is 822729823. The next prime is 822729827. The reversal of 822729825 is 528927228.

It is an interprime number because it is at equal distance from previous prime (822729823) and next prime (822729827).

It is not a de Polignac number, because 822729825 - 2¹ = 822729823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (822729823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 608755 + ... + 610104.

Almost surely, 2^822729825 is an apocalyptic number.

It is an amenable number.

822729825 is a deficient number, since it is larger than the sum of its proper divisors (688656575).

822729825 is a wasteful number, since it uses less digits than its factorization.

822729825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218878 (or 1218867 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 822729825 is about 28683.2673348069. The cubic root of 822729825 is about 937.0276660673.

The spelling of 822729825 in words is "eight hundred twenty-two million, seven hundred twenty-nine thousand, eight hundred twenty-five".