225210019 has 2 divisors, whose sum is σ = 225210020. Its totient is φ = 225210018.

The previous prime is 225209927. The next prime is 225210031. The reversal of 225210019 is 910012522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225210019 - 2¹³ = 225201827 is a prime.

It is a super-2 number, since 2×225210019² = 101439105315960722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (225210079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112605009 + 112605010.

It is an arithmetic number, because the mean of its divisors is an integer number (112605010).

Almost surely, 2^225210019 is an apocalyptic number.

225210019 is a deficient number, since it is larger than the sum of its proper divisors (1).

225210019 is an equidigital number, since it uses as much as digits as its factorization.

225210019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 225210019 is about 15006.9990004664. Note that the first 3 decimals coincide. The cubic root of 225210019 is about 608.4093818898.

The spelling of 225210019 in words is "two hundred twenty-five million, two hundred ten thousand, nineteen".