198272925 has 36 divisors (see below), whose sum is σ = 363807444. Its totient is φ = 103161600.

The previous prime is 198272917. The next prime is 198272927. The reversal of 198272925 is 529272891.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 75794436 + 122478489 = 8706^2 + 11067^2 .

It is not a de Polignac number, because 198272925 - 2³ = 198272917 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198272927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1522 + ... + 19971.

Almost surely, 2^198272925 is an apocalyptic number.

198272925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

198272925 is a deficient number, since it is larger than the sum of its proper divisors (165534519).

198272925 is a wasteful number, since it uses less digits than its factorization.

198272925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21550 (or 21542 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 198272925 is about 14080.9419074151. The cubic root of 198272925 is about 583.1153462145.

The spelling of 198272925 in words is "one hundred ninety-eight million, two hundred seventy-two thousand, nine hundred twenty-five".