201225013 has 4 divisors (see below), whose sum is σ = 219518208. Its totient is φ = 182931820.

The previous prime is 201224963. The next prime is 201225049. The reversal of 201225013 is 310522102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201225013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201225083) 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 3 ways as a sum of consecutive naturals, for example, 9146581 + ... + 9146602.

It is an arithmetic number, because the mean of its divisors is an integer number (54879552).

Almost surely, 2^201225013 is an apocalyptic number.

It is an amenable number.

201225013 is a deficient number, since it is larger than the sum of its proper divisors (18293195).

201225013 is a wasteful number, since it uses less digits than its factorization.

201225013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18293194.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 201225013 is about 14185.3802557422. The cubic root of 201225013 is about 585.9951047361.

Adding to 201225013 its reverse (310522102), we get a palindrome (511747115).

The spelling of 201225013 in words is "two hundred one million, two hundred twenty-five thousand, thirteen".