418223825 has 6 divisors (see below), whose sum is σ = 518597574. Its totient is φ = 334579040.

The previous prime is 418223777. The next prime is 418223831. The reversal of 418223825 is 528322814.

It can be written as a sum of positive squares in 3 ways, for example, as 98565184 + 319658641 = 9928^2 + 17879^2 .

It is not a de Polignac number, because 418223825 - 2¹⁴ = 418207441 is a prime.

It is a super-2 number, since 2×418223825² = 349822335595261250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8364452 + ... + 8364501.

It is an arithmetic number, because the mean of its divisors is an integer number (86432929).

Almost surely, 2^418223825 is an apocalyptic number.

It is an amenable number.

418223825 is a deficient number, since it is larger than the sum of its proper divisors (100373749).

418223825 is a wasteful number, since it uses less digits than its factorization.

418223825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16728963 (or 16728958 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 418223825 is about 20450.5213869965. The cubic root of 418223825 is about 747.8300686594.

The spelling of 418223825 in words is "four hundred eighteen million, two hundred twenty-three thousand, eight hundred twenty-five".