225114521 has 4 divisors (see below), whose sum is σ = 225275700. Its totient is φ = 224953344.

The previous prime is 225114511. The next prime is 225114523. The reversal of 225114521 is 125411522.

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 69488896 + 155625625 = 8336^2 + 12475^2 .

It is a cyclic number.

It is not a de Polignac number, because 225114521 - 2⁶ = 225114457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225114523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78476 + ... + 81293.

It is an arithmetic number, because the mean of its divisors is an integer number (56318925).

Almost surely, 2^225114521 is an apocalyptic number.

It is an amenable number.

225114521 is a deficient number, since it is larger than the sum of its proper divisors (161179).

225114521 is a wasteful number, since it uses less digits than its factorization.

225114521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161178.

The product of its digits is 800, while the sum is 23.

The square root of 225114521 is about 15003.8168810473. The cubic root of 225114521 is about 608.3233731444.

The spelling of 225114521 in words is "two hundred twenty-five million, one hundred fourteen thousand, five hundred twenty-one".