402316625 has 8 divisors (see below), whose sum is σ = 502091304. Its totient is φ = 321853200.

The previous prime is 402316613. The next prime is 402316627. The reversal of 402316625 is 526613204.

It can be written as a sum of positive squares in 4 ways, for example, as 9048064 + 393268561 = 3008^2 + 19831^2 .

It is not a de Polignac number, because 402316625 - 2⁶ = 402316561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402316627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1609142 + ... + 1609391.

It is an arithmetic number, because the mean of its divisors is an integer number (62761413).

Almost surely, 2^402316625 is an apocalyptic number.

It is an amenable number.

402316625 is a deficient number, since it is larger than the sum of its proper divisors (99774679).

402316625 is an equidigital number, since it uses as much as digits as its factorization.

402316625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3218548 (or 3218538 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 402316625 is about 20057.8320114613. The cubic root of 402316625 is about 738.2259824300.

Adding to 402316625 its reverse (526613204), we get a palindrome (928929829).

The spelling of 402316625 in words is "four hundred two million, three hundred sixteen thousand, six hundred twenty-five".