400000425 has 48 divisors (see below), whose sum is σ = 724239360. Its totient is φ = 193192000.

The previous prime is 400000411. The next prime is 400000457. The reversal of 400000425 is 524000004.

400000425 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 400000425 - 2¹⁰ = 399999401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 255796 + ... + 257354.

It is an arithmetic number, because the mean of its divisors is an integer number (15088320).

Almost surely, 2^400000425 is an apocalyptic number.

It is an amenable number.

400000425 is a deficient number, since it is larger than the sum of its proper divisors (324238935).

400000425 is a wasteful number, since it uses less digits than its factorization.

400000425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894 (or 1889 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 400000425 is about 20000.0106249972. The cubic root of 400000425 is about 736.8065606802.

Adding to 400000425 its reverse (524000004), we get a palindrome (924000429).

The spelling of 400000425 in words is "four hundred million, four hundred twenty-five", and thus it is an aban number.