400330425 has 48 divisors (see below), whose sum is σ = 727453440. Its totient is φ = 192648000.

The previous prime is 400330423. The next prime is 400330429. The reversal of 400330425 is 524033004.

It is a happy number.

It is not a de Polignac number, because 400330425 - 2¹ = 400330423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400330423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 112930 + ... + 116420.

It is an arithmetic number, because the mean of its divisors is an integer number (15155280).

Almost surely, 2^400330425 is an apocalyptic number.

It is an amenable number.

400330425 is a deficient number, since it is larger than the sum of its proper divisors (327123015).

400330425 is a wasteful number, since it uses less digits than its factorization.

400330425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3654 (or 3649 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 400330425 is about 20008.2589197561. The cubic root of 400330425 is about 737.0091265738.

Adding to 400330425 its reverse (524033004), we get a palindrome (924363429).

The spelling of 400330425 in words is "four hundred million, three hundred thirty thousand, four hundred twenty-five".