225522013 has 4 divisors (see below), whose sum is σ = 229344480. Its totient is φ = 221699548.

The previous prime is 225521987. The next prime is 225522029. The reversal of 225522013 is 310225522.

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, and also an emirpimes, since its reverse is a distinct semiprime: 310225522 = 2 ⋅155112761.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225522013 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 (225522053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1911145 + ... + 1911262.

It is an arithmetic number, because the mean of its divisors is an integer number (57336120).

Almost surely, 2^225522013 is an apocalyptic number.

It is an amenable number.

225522013 is a deficient number, since it is larger than the sum of its proper divisors (3822467).

225522013 is an equidigital number, since it uses as much as digits as its factorization.

225522013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3822466.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 225522013 is about 15017.3903525213. The cubic root of 225522013 is about 608.6902049328.

Adding to 225522013 its reverse (310225522), we get a palindrome (535747535).

The spelling of 225522013 in words is "two hundred twenty-five million, five hundred twenty-two thousand, thirteen".