218195925 has 12 divisors (see below), whose sum is σ = 360750720. Its totient is φ = 116371120.

The previous prime is 218195909. The next prime is 218195951. The reversal of 218195925 is 529591812.

218195925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 218195925 - 2⁴ = 218195909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1454565 + ... + 1454714.

It is an arithmetic number, because the mean of its divisors is an integer number (30062560).

Almost surely, 2^218195925 is an apocalyptic number.

218195925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

218195925 is a deficient number, since it is larger than the sum of its proper divisors (142554795).

218195925 is a wasteful number, since it uses less digits than its factorization.

218195925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909292 (or 2909287 counting only the distinct ones).

The product of its digits is 64800, while the sum is 42.

The square root of 218195925 is about 14771.4564278544. The cubic root of 218195925 is about 602.0264122730.

The spelling of 218195925 in words is "two hundred eighteen million, one hundred ninety-five thousand, nine hundred twenty-five".