400620325 has 72 divisors (see below), whose sum is σ = 615764160. Its totient is φ = 257241600.

The previous prime is 400620313. The next prime is 400620343. The reversal of 400620325 is 523026004.

It is a happy number.

It is not a de Polignac number, because 400620325 - 2¹³ = 400612133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400620296 and 400620305.

It is a congruent number.

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 71 ways as a sum of consecutive naturals, for example, 1662205 + ... + 1662445.

It is an arithmetic number, because the mean of its divisors is an integer number (8552280).

Almost surely, 2^400620325 is an apocalyptic number.

It is an amenable number.

400620325 is a deficient number, since it is larger than the sum of its proper divisors (215143835).

400620325 is a wasteful number, since it uses less digits than its factorization.

400620325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 400620325 is about 20015.5021171091. The cubic root of 400620325 is about 737.1869858115.

Adding to 400620325 its reverse (523026004), we get a palindrome (923646329).

The spelling of 400620325 in words is "four hundred million, six hundred twenty thousand, three hundred twenty-five".