225118529 has 4 divisors (see below), whose sum is σ = 225159984. Its totient is φ = 225077076.

The previous prime is 225118519. The next prime is 225118541. The reversal of 225118529 is 925811522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 925811522 = 2 ⋅462905761.

It is a cyclic number.

It is not a de Polignac number, because 225118529 - 2⁴ = 225118513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225118519) 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, 11087 + ... + 23940.

It is an arithmetic number, because the mean of its divisors is an integer number (56289996).

Almost surely, 2^225118529 is an apocalyptic number.

It is an amenable number.

225118529 is a deficient number, since it is larger than the sum of its proper divisors (41455).

225118529 is an equidigital number, since it uses as much as digits as its factorization.

225118529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41454.

The product of its digits is 14400, while the sum is 35.

The square root of 225118529 is about 15003.9504464658. The cubic root of 225118529 is about 608.3269833744.

The spelling of 225118529 in words is "two hundred twenty-five million, one hundred eighteen thousand, five hundred twenty-nine".