400623225 has 24 divisors (see below), whose sum is σ = 663133152. Its totient is φ = 213417600.

The previous prime is 400623221. The next prime is 400623239. The reversal of 400623225 is 522326004.

It is not a de Polignac number, because 400623225 - 2² = 400623221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400623195 and 400623204.

It is not an unprimeable number, because it can be changed into a prime (400623221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74890 + ... + 80060.

It is an arithmetic number, because the mean of its divisors is an integer number (27630548).

Almost surely, 2^400623225 is an apocalyptic number.

It is an amenable number.

400623225 is a deficient number, since it is larger than the sum of its proper divisors (262509927).

400623225 is a wasteful number, since it uses less digits than its factorization.

400623225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6217 (or 6212 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 400623225 is about 20015.5745608264. The cubic root of 400623225 is about 737.1887645839.

Adding to 400623225 its reverse (522326004), we get a palindrome (922949229).

The spelling of 400623225 in words is "four hundred million, six hundred twenty-three thousand, two hundred twenty-five".