225451019 has 2 divisors, whose sum is σ = 225451020. Its totient is φ = 225451018.

The previous prime is 225451013. The next prime is 225451043. The reversal of 225451019 is 910154522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225451019 - 2¹⁶ = 225385483 is a prime.

It is a super-2 number, since 2×225451019² = 101656323936276722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 225450982 and 225451000.

It is not a weakly prime, because it can be changed into another prime (225451013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112725509 + 112725510.

It is an arithmetic number, because the mean of its divisors is an integer number (112725510).

Almost surely, 2^225451019 is an apocalyptic number.

225451019 is a deficient number, since it is larger than the sum of its proper divisors (1).

225451019 is an equidigital number, since it uses as much as digits as its factorization.

225451019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 225451019 is about 15015.0264402032. The cubic root of 225451019 is about 608.6263266339.

The spelling of 225451019 in words is "two hundred twenty-five million, four hundred fifty-one thousand, nineteen".