225457619 has 4 divisors (see below), whose sum is σ = 226335144. Its totient is φ = 224580096.

The previous prime is 225457607. The next prime is 225457657. The reversal of 225457619 is 916754522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225457619 - 2¹² = 225453523 is a prime.

It is a super-2 number, since 2×225457619² = 101662275930298322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225457679) 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, 438377 + ... + 438890.

It is an arithmetic number, because the mean of its divisors is an integer number (56583786).

Almost surely, 2^225457619 is an apocalyptic number.

225457619 is a deficient number, since it is larger than the sum of its proper divisors (877525).

225457619 is an equidigital number, since it uses as much as digits as its factorization.

225457619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877524.

The product of its digits is 151200, while the sum is 41.

The square root of 225457619 is about 15015.2462184275. The cubic root of 225457619 is about 608.6322656838.

The spelling of 225457619 in words is "two hundred twenty-five million, four hundred fifty-seven thousand, six hundred nineteen".