197798025 has 24 divisors (see below), whose sum is σ = 329934240. Its totient is φ = 104554240.

The previous prime is 197798023. The next prime is 197798033. The reversal of 197798025 is 520897791.

It is not a de Polignac number, because 197798025 - 2¹ = 197798023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (197798023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3195 + ... + 20144.

It is an arithmetic number, because the mean of its divisors is an integer number (13747260).

Almost surely, 2^197798025 is an apocalyptic number.

197798025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

197798025 is a deficient number, since it is larger than the sum of its proper divisors (132136215).

197798025 is a wasteful number, since it uses less digits than its factorization.

197798025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23465 (or 23460 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 48.

The square root of 197798025 is about 14064.0685791843. The cubic root of 197798025 is about 582.6494179741.

The spelling of 197798025 in words is "one hundred ninety-seven million, seven hundred ninety-eight thousand, twenty-five".