402225688 has 8 divisors (see below), whose sum is σ = 754173180. Its totient is φ = 201112840.

The previous prime is 402225683. The next prime is 402225689. The reversal of 402225688 is 886522204.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402225683) 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, 25139098 + ... + 25139113.

Almost surely, 2^402225688 is an apocalyptic number.

It is an amenable number.

402225688 is a deficient number, since it is larger than the sum of its proper divisors (351947492).

402225688 is a wasteful number, since it uses less digits than its factorization.

402225688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50278217 (or 50278213 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 402225688 is about 20055.5650132326. The cubic root of 402225688 is about 738.1703569925.

The spelling of 402225688 in words is "four hundred two million, two hundred twenty-five thousand, six hundred eighty-eight".