402425522 has 4 divisors (see below), whose sum is σ = 603638286. Its totient is φ = 201212760.

The previous prime is 402425521. The next prime is 402425531. The reversal of 402425522 is 225524204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 400840441 + 1585081 = 20021^2 + 1259^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402425491 and 402425500.

It is not an unprimeable number, because it can be changed into a prime (402425521) 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 as a sum of consecutive naturals, namely, 100606379 + ... + 100606382.

Almost surely, 2^402425522 is an apocalyptic number.

402425522 is a deficient number, since it is larger than the sum of its proper divisors (201212764).

402425522 is a wasteful number, since it uses less digits than its factorization.

402425522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201212763.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 402425522 is about 20060.5464033261. The cubic root of 402425522 is about 738.2925828285.

Adding to 402425522 its reverse (225524204), we get a palindrome (627949726).

The spelling of 402425522 in words is "four hundred two million, four hundred twenty-five thousand, five hundred twenty-two".