402194225 has 6 divisors (see below), whose sum is σ = 498720870. Its totient is φ = 321755360.

The previous prime is 402194183. The next prime is 402194257. The reversal of 402194225 is 522491204.

402194225 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1874161 + 400320064 = 1369^2 + 20008^2 .

It is not a de Polignac number, because 402194225 - 2⁶ = 402194161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8043860 + ... + 8043909.

It is an arithmetic number, because the mean of its divisors is an integer number (83120145).

Almost surely, 2^402194225 is an apocalyptic number.

It is an amenable number.

402194225 is a deficient number, since it is larger than the sum of its proper divisors (96526645).

402194225 is a wasteful number, since it uses less digits than its factorization.

402194225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16087779 (or 16087774 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 402194225 is about 20054.7806021407. The cubic root of 402194225 is about 738.1511093742.

It can be divided in two parts, 40219 and 4225, that added together give a palindrome (44444).

The spelling of 402194225 in words is "four hundred two million, one hundred ninety-four thousand, two hundred twenty-five".