402321225 has 24 divisors (see below), whose sum is σ = 665965312. Its totient is φ = 214315200.

The previous prime is 402321223. The next prime is 402321247. The reversal of 402321225 is 522123204.

It is not a de Polignac number, because 402321225 - 2¹ = 402321223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402321223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71619 + ... + 77031.

Almost surely, 2^402321225 is an apocalyptic number.

It is an amenable number.

402321225 is a deficient number, since it is larger than the sum of its proper divisors (263644087).

402321225 is a wasteful number, since it uses less digits than its factorization.

402321225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6417 (or 6412 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 402321225 is about 20057.9466795582. The cubic root of 402321225 is about 738.2287959905.

Adding to 402321225 its reverse (522123204), we get a palindrome (924444429).

The spelling of 402321225 in words is "four hundred two million, three hundred twenty-one thousand, two hundred twenty-five".