400225023 has 32 divisors (see below), whose sum is σ = 648103680. Its totient is φ = 242082720.

The previous prime is 400224997. The next prime is 400225031. The reversal of 400225023 is 320522004.

It is not a de Polignac number, because 400225023 - 2⁹ = 400224511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400224987 and 400225005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400225223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201865 + ... + 203837.

It is an arithmetic number, because the mean of its divisors is an integer number (20253240).

Almost surely, 2^400225023 is an apocalyptic number.

400225023 is a deficient number, since it is larger than the sum of its proper divisors (247878657).

400225023 is a wasteful number, since it uses less digits than its factorization.

400225023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676 (or 2670 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 400225023 is about 20005.6247840451. The cubic root of 400225023 is about 736.9444391308.

Adding to 400225023 its reverse (320522004), we get a palindrome (720747027).

The spelling of 400225023 in words is "four hundred million, two hundred twenty-five thousand, twenty-three".