400610225 has 12 divisors (see below), whose sum is σ = 497116620. Its totient is φ = 320256000.

The previous prime is 400610209. The next prime is 400610233. The reversal of 400610225 is 522016004.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 123454321 + 277155904 = 11111^2 + 16648^2 .

It is not a de Polignac number, because 400610225 - 2⁴ = 400610209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400610197 and 400610206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35021 + ... + 45029.

It is an arithmetic number, because the mean of its divisors is an integer number (41426385).

Almost surely, 2^400610225 is an apocalyptic number.

It is an amenable number.

400610225 is a deficient number, since it is larger than the sum of its proper divisors (96506395).

400610225 is a wasteful number, since it uses less digits than its factorization.

400610225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11620 (or 11615 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 400610225 is about 20015.2498110815. The cubic root of 400610225 is about 737.1807907097.

Adding to 400610225 its reverse (522016004), we get a palindrome (922626229).

The spelling of 400610225 in words is "four hundred million, six hundred ten thousand, two hundred twenty-five".