201888225 has 144 divisors (see below), whose sum is σ = 463017984. Its totient is φ = 81648000.

The previous prime is 201888221. The next prime is 201888251. The reversal of 201888225 is 522888102.

It is a happy number.

It is not a de Polignac number, because 201888225 - 2² = 201888221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201888225.

It is not an unprimeable number, because it can be changed into a prime (201888221) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 744840 + ... + 745110.

Almost surely, 2^201888225 is an apocalyptic number.

201888225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201888225 is an abundant number, since it is smaller than the sum of its proper divisors (261129759).

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

201888225 is a wasteful number, since it uses less digits than its factorization.

201888225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 201888225 is about 14208.7376286565. The cubic root of 201888225 is about 586.6381871434.

The spelling of 201888225 in words is "two hundred one million, eight hundred eighty-eight thousand, two hundred twenty-five".