402425504 has 36 divisors (see below), whose sum is σ = 857919006. Its totient is φ = 185732352.

The previous prime is 402425483. The next prime is 402425509. The reversal of 402425504 is 405524204.

It can be written as a sum of positive squares in 3 ways, for example, as 205865104 + 196560400 = 14348^2 + 14020^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (402425509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31799 + ... + 42614.

Almost surely, 2^402425504 is an apocalyptic number.

It is an amenable number.

402425504 is an abundant number, since it is smaller than the sum of its proper divisors (455493502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402425504 is a wasteful number, since it uses less digits than its factorization.

402425504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74449 (or 74428 counting only the distinct ones).

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

The square root of 402425504 is about 20060.5459546843. The cubic root of 402425504 is about 738.2925718209.

Adding to 402425504 its reverse (405524204), we get a palindrome (807949708).

The spelling of 402425504 in words is "four hundred two million, four hundred twenty-five thousand, five hundred four".