224240425 has 6 divisors (see below), whose sum is σ = 278058158. Its totient is φ = 179392320.

The previous prime is 224240417. The next prime is 224240437. The reversal of 224240425 is 524042422.

It can be written as a sum of positive squares in 3 ways, for example, as 2111209 + 222129216 = 1453^2 + 14904^2 .

It is not a de Polignac number, because 224240425 - 2³ = 224240417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 8969617 = 224240425 / (2 + 2 + 4 + 2 + 4 + 0 + 4 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 224240425.

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, 4484784 + ... + 4484833.

Almost surely, 2^224240425 is an apocalyptic number.

224240425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

224240425 is a deficient number, since it is larger than the sum of its proper divisors (53817733).

224240425 is an equidigital number, since it uses as much as digits as its factorization.

224240425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8969627 (or 8969622 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 224240425 is about 14974.6594285146. The cubic root of 224240425 is about 607.5349999875.

Adding to 224240425 its reverse (524042422), we get a palindrome (748282847).

The spelling of 224240425 in words is "two hundred twenty-four million, two hundred forty thousand, four hundred twenty-five".