820298825 has 12 divisors (see below), whose sum is σ = 1022858640. Its totient is φ = 652569360.

The previous prime is 820298821. The next prime is 820298867. The reversal of 820298825 is 528892028.

It is a happy number.

It is not a de Polignac number, because 820298825 - 2² = 820298821 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (820298821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87179 + ... + 96128.

It is an arithmetic number, because the mean of its divisors is an integer number (85238220).

Almost surely, 2^820298825 is an apocalyptic number.

It is an amenable number.

820298825 is a deficient number, since it is larger than the sum of its proper divisors (202559815).

820298825 is a wasteful number, since it uses less digits than its factorization.

820298825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183496 (or 183491 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 820298825 is about 28640.8593621071. The cubic root of 820298825 is about 936.1038465789.

The spelling of 820298825 in words is "eight hundred twenty million, two hundred ninety-eight thousand, eight hundred twenty-five".