198225826 has 4 divisors (see below), whose sum is σ = 297338742. Its totient is φ = 99112912.

The previous prime is 198225821. The next prime is 198225847. The reversal of 198225826 is 628522891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 191850201 + 6375625 = 13851^2 + 2525^2 .

It is not an unprimeable number, because it can be changed into a prime (198225821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49556455 + ... + 49556458.

Almost surely, 2^198225826 is an apocalyptic number.

198225826 is a deficient number, since it is larger than the sum of its proper divisors (99112916).

198225826 is an equidigital number, since it uses as much as digits as its factorization.

198225826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99112915.

The product of its digits is 138240, while the sum is 43.

The square root of 198225826 is about 14079.2693702479. The cubic root of 198225826 is about 583.0691702600.

The spelling of 198225826 in words is "one hundred ninety-eight million, two hundred twenty-five thousand, eight hundred twenty-six".