197894025 has 144 divisors (see below), whose sum is σ = 452649600. Its totient is φ = 80455680.

The previous prime is 197893981. The next prime is 197894069. The reversal of 197894025 is 520498791.

It is an interprime number because it is at equal distance from previous prime (197893981) and next prime (197894069).

It is not a de Polignac number, because 197894025 - 2⁹ = 197893513 is a prime.

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

It is an unprimeable number.

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 143 ways as a sum of consecutive naturals, for example, 508531 + ... + 508919.

It is an arithmetic number, because the mean of its divisors is an integer number (3143400).

Almost surely, 2^197894025 is an apocalyptic number.

197894025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

197894025 is an abundant number, since it is smaller than the sum of its proper divisors (254755575).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197894025 is a wasteful number, since it uses less digits than its factorization.

197894025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 440 counting only the distinct ones).

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

The square root of 197894025 is about 14067.4811178121. The cubic root of 197894025 is about 582.7436644451.

The spelling of 197894025 in words is "one hundred ninety-seven million, eight hundred ninety-four thousand, twenty-five".