225151215161 has 4 divisors (see below), whose sum is σ = 226585299492. Its totient is φ = 223717130832.

The previous prime is 225151215143. The next prime is 225151215181. The reversal of 225151215161 is 161512151522.

225151215161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 145954561600 + 79196653561 = 382040^2 + 281419^2 .

It is a cyclic number.

It is not a de Polignac number, because 225151215161 - 2⁶ = 225151215097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225151215131) 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, 717041930 + ... + 717042243.

It is an arithmetic number, because the mean of its divisors is an integer number (56646324873).

Almost surely, 2^225151215161 is an apocalyptic number.

It is an amenable number.

225151215161 is a deficient number, since it is larger than the sum of its proper divisors (1434084331).

225151215161 is a wasteful number, since it uses less digits than its factorization.

225151215161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434084330.

The product of its digits is 6000, while the sum is 32.

Adding to 225151215161 its reverse (161512151522), we get a palindrome (386663366683).

The spelling of 225151215161 in words is "two hundred twenty-five billion, one hundred fifty-one million, two hundred fifteen thousand, one hundred sixty-one".