225531847145 has 8 divisors (see below), whose sum is σ = 295241690880. Its totient is φ = 164023161520.

The previous prime is 225531847129. The next prime is 225531847153. The reversal of 225531847145 is 541748135522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225531847145 - 2⁴ = 225531847129 is a prime.

It is a super-2 number, since 2×225531847145² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 225531847145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2050289465 + ... + 2050289574.

It is an arithmetic number, because the mean of its divisors is an integer number (36905211360).

Almost surely, 2^225531847145 is an apocalyptic number.

It is an amenable number.

225531847145 is a deficient number, since it is larger than the sum of its proper divisors (69709843735).

225531847145 is a wasteful number, since it uses less digits than its factorization.

225531847145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100579055.

The product of its digits is 1344000, while the sum is 47.

The spelling of 225531847145 in words is "two hundred twenty-five billion, five hundred thirty-one million, eight hundred forty-seven thousand, one hundred forty-five".