225550013 has 4 divisors (see below), whose sum is σ = 242900028. Its totient is φ = 208200000.

The previous prime is 225549971. The next prime is 225550021. The reversal of 225550013 is 310055522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17123044 + 208426969 = 4138^2 + 14437^2 .

It is a cyclic number.

It is not a de Polignac number, because 225550013 - 2⁶ = 225549949 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 (225550063) 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, 8674988 + ... + 8675013.

It is an arithmetic number, because the mean of its divisors is an integer number (60725007).

Almost surely, 2^225550013 is an apocalyptic number.

It is an amenable number.

225550013 is a deficient number, since it is larger than the sum of its proper divisors (17350015).

225550013 is a wasteful number, since it uses less digits than its factorization.

225550013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17350014.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 225550013 is about 15018.3225761068. The cubic root of 225550013 is about 608.7153948174.

The spelling of 225550013 in words is "two hundred twenty-five million, five hundred fifty thousand, thirteen".