225724225073 has 4 divisors (see below), whose sum is σ = 225725214960. Its totient is φ = 225723235188.

The previous prime is 225724225037. The next prime is 225724225109. The reversal of 225724225073 is 370522427522.

It is a happy number.

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 a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (225724225037) and next prime (225724225109).

It is a cyclic number.

It is not a de Polignac number, because 225724225073 - 2¹⁰ = 225724224049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 225724225073.

It is not an unprimeable number, because it can be changed into a prime (225724225673) 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, 39386 + ... + 673052.

It is an arithmetic number, because the mean of its divisors is an integer number (56431303740).

Almost surely, 2^225724225073 is an apocalyptic number.

It is an amenable number.

225724225073 is a deficient number, since it is larger than the sum of its proper divisors (989887).

225724225073 is an equidigital number, since it uses as much as digits as its factorization.

225724225073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989886.

The product of its (nonzero) digits is 470400, while the sum is 41.

The spelling of 225724225073 in words is "two hundred twenty-five billion, seven hundred twenty-four million, two hundred twenty-five thousand, seventy-three".