201225132 has 18 divisors (see below), whose sum is σ = 508652508. Its totient is φ = 67075032.

The previous prime is 201225097. The next prime is 201225133. The reversal of 201225132 is 231522102.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (201225133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2794758 + ... + 2794829.

Almost surely, 2^201225132 is an apocalyptic number.

It is an amenable number.

201225132 is an abundant number, since it is smaller than the sum of its proper divisors (307427376).

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

201225132 is a wasteful number, since it uses less digits than its factorization.

201225132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5589597 (or 5589592 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 201225132 is about 14185.3844502008. The cubic root of 201225132 is about 585.9952202509.

Adding to 201225132 its reverse (231522102), we get a palindrome (432747234).

The spelling of 201225132 in words is "two hundred one million, two hundred twenty-five thousand, one hundred thirty-two".