400322025 has 36 divisors (see below), whose sum is σ = 721893900. Its totient is φ = 212054400.

The previous prime is 400322017. The next prime is 400322029. The reversal of 400322025 is 520223004.

It can be written as a sum of positive squares in 6 ways, for example, as 86713344 + 313608681 = 9312^2 + 17709^2 .

It is not a de Polignac number, because 400322025 - 2³ = 400322017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400321989 and 400322007.

It is not an unprimeable number, because it can be changed into a prime (400322029) 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 35 ways as a sum of consecutive naturals, for example, 27555 + ... + 39495.

Almost surely, 2^400322025 is an apocalyptic number.

400322025 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

400322025 is a deficient number, since it is larger than the sum of its proper divisors (321571875).

400322025 is a wasteful number, since it uses less digits than its factorization.

400322025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12106 (or 12098 counting only the distinct ones).

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

The square root of 400322025 is about 20008.0490053378. The cubic root of 400322025 is about 737.0039717320.

Adding to 400322025 its reverse (520223004), we get a palindrome (920545029).

The spelling of 400322025 in words is "four hundred million, three hundred twenty-two thousand, twenty-five".