225151645 has 8 divisors (see below), whose sum is σ = 270491904. Its totient is φ = 179914704.

The previous prime is 225151643. The next prime is 225151657. The reversal of 225151645 is 546151522.

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

It is a cyclic number.

It is not a de Polignac number, because 225151645 - 2¹ = 225151643 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 (225151643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20949 + ... + 29818.

It is an arithmetic number, because the mean of its divisors is an integer number (33811488).

Almost surely, 2^225151645 is an apocalyptic number.

It is an amenable number.

225151645 is a deficient number, since it is larger than the sum of its proper divisors (45340259).

225151645 is an equidigital number, since it uses as much as digits as its factorization.

225151645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51659.

The product of its digits is 12000, while the sum is 31.

The square root of 225151645 is about 15005.0539819089. The cubic root of 225151645 is about 608.3568111704.

The spelling of 225151645 in words is "two hundred twenty-five million, one hundred fifty-one thousand, six hundred forty-five".