402221325 has 48 divisors (see below), whose sum is σ = 728971200. Its totient is φ = 194073600.

The previous prime is 402221321. The next prime is 402221327. The reversal of 402221325 is 523122204.

It is not a de Polignac number, because 402221325 - 2² = 402221321 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402221321) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 187861 + ... + 189989.

It is an arithmetic number, because the mean of its divisors is an integer number (15186900).

Almost surely, 2^402221325 is an apocalyptic number.

It is an amenable number.

402221325 is a deficient number, since it is larger than the sum of its proper divisors (326749875).

402221325 is a wasteful number, since it uses less digits than its factorization.

402221325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382 (or 2377 counting only the distinct ones).

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

The square root of 402221325 is about 20055.4562401358. The cubic root of 402221325 is about 738.1676879694.

Adding to 402221325 its reverse (523122204), we get a palindrome (925343529).

The spelling of 402221325 in words is "four hundred two million, two hundred twenty-one thousand, three hundred twenty-five".