225837145 has 4 divisors (see below), whose sum is σ = 271004580. Its totient is φ = 180669712.

The previous prime is 225837127. The next prime is 225837149. The reversal of 225837145 is 541738522.

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 105452361 + 120384784 = 10269^2 + 10972^2 .

It is a cyclic number.

It is not a de Polignac number, because 225837145 - 2²³ = 217448537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225837149) 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, 22583710 + ... + 22583719.

It is an arithmetic number, because the mean of its divisors is an integer number (67751145).

Almost surely, 2^225837145 is an apocalyptic number.

It is an amenable number.

225837145 is a deficient number, since it is larger than the sum of its proper divisors (45167435).

225837145 is an equidigital number, since it uses as much as digits as its factorization.

225837145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45167434.

The product of its digits is 67200, while the sum is 37.

The square root of 225837145 is about 15027.8789255171. The cubic root of 225837145 is about 608.9735896650.

The spelling of 225837145 in words is "two hundred twenty-five million, eight hundred thirty-seven thousand, one hundred forty-five".