225019 has 4 divisors (see below), whose sum is σ = 230296. Its totient is φ = 219744.

The previous prime is 224993. The next prime is 225023. The reversal of 225019 is 910522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910522 = 2 ⋅455261.

It is a cyclic number.

It is not a de Polignac number, because 225019 - 2⁷ = 224891 is a prime.

It is a super-2 number, since 2×225019² = 101267100722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 224987 and 225005.

It is not an unprimeable number, because it can be changed into a prime (225079) 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, 2574 + ... + 2659.

It is an arithmetic number, because the mean of its divisors is an integer number (57574).

2²²⁵⁰¹⁹ is an apocalyptic number.

225019 is a deficient number, since it is larger than the sum of its proper divisors (5277).

225019 is an equidigital number, since it uses as much as digits as its factorization.

225019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5276.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 225019 is about 474.3616763610. The cubic root of 225019 is about 60.8237319348.

It can be divided in two parts, 22 and 5019, that added together give a square (5041 = 71²).

The spelling of 225019 in words is "two hundred twenty-five thousand, nineteen".