423406225 has 18 divisors (see below), whose sum is σ = 577096310. Its totient is φ = 307929600.

The previous prime is 423406223. The next prime is 423406229. The reversal of 423406225 is 522604324.

It can be written as a sum of positive squares in 3 ways, for example, as 1185921 + 422220304 = 1089^2 + 20548^2 .

It is not a de Polignac number, because 423406225 - 2¹ = 423406223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 423406193 and 423406202.

It is not an unprimeable number, because it can be changed into a prime (423406223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 66960 + ... + 73009.

Almost surely, 2^423406225 is an apocalyptic number.

It is an amenable number.

423406225 is a deficient number, since it is larger than the sum of its proper divisors (153690085).

423406225 is a wasteful number, since it uses less digits than its factorization.

423406225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140001 (or 139985 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 423406225 is about 20576.8370990296. The cubic root of 423406225 is about 750.9062969858.

The spelling of 423406225 in words is "four hundred twenty-three million, four hundred six thousand, two hundred twenty-five".