400450425 has 24 divisors (see below), whose sum is σ = 664374144. Its totient is φ = 212832960.

The previous prime is 400450411. The next prime is 400450429. The reversal of 400450425 is 524054004.

It is not a de Polignac number, because 400450425 - 2⁹ = 400449913 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 400450395 and 400450404.

It is not an unprimeable number, because it can be changed into a prime (400450429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12864 + ... + 31086.

It is an arithmetic number, because the mean of its divisors is an integer number (27682256).

Almost surely, 2^400450425 is an apocalyptic number.

It is an amenable number.

400450425 is a deficient number, since it is larger than the sum of its proper divisors (263923719).

400450425 is a wasteful number, since it uses less digits than its factorization.

400450425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18529 (or 18524 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 400450425 is about 20011.2574567417. The cubic root of 400450425 is about 737.0827592984.

The spelling of 400450425 in words is "four hundred million, four hundred fifty thousand, four hundred twenty-five".