222525145 has 4 divisors (see below), whose sum is σ = 267030180. Its totient is φ = 178020112.

The previous prime is 222525143. The next prime is 222525179. The reversal of 222525145 is 541525222.

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 174583369 + 47941776 = 13213^2 + 6924^2 .

It is a cyclic number.

It is not a de Polignac number, because 222525145 - 2¹ = 222525143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222525143) 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, 22252510 + ... + 22252519.

It is an arithmetic number, because the mean of its divisors is an integer number (66757545).

Almost surely, 2^222525145 is an apocalyptic number.

It is an amenable number.

222525145 is a deficient number, since it is larger than the sum of its proper divisors (44505035).

222525145 is an equidigital number, since it uses as much as digits as its factorization.

222525145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44505034.

The product of its digits is 8000, while the sum is 28.

The square root of 222525145 is about 14917.2767286794. The cubic root of 222525145 is about 605.9819629235.

The spelling of 222525145 in words is "two hundred twenty-two million, five hundred twenty-five thousand, one hundred forty-five".