422425397 has 8 divisors (see below), whose sum is σ = 441499800. Its totient is φ = 403651584.

The previous prime is 422425387. The next prime is 422425439. The reversal of 422425397 is 793524224.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 183846481 + 238578916 = 13559^2 + 15446^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 422425397 - 2¹² = 422421301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 422425397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422425307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72272 + ... + 77897.

It is an arithmetic number, because the mean of its divisors is an integer number (55187475).

Almost surely, 2^422425397 is an apocalyptic number.

It is an amenable number.

422425397 is a deficient number, since it is larger than the sum of its proper divisors (19074403).

422425397 is a wasteful number, since it uses less digits than its factorization.

422425397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150295.

The product of its digits is 120960, while the sum is 38.

The square root of 422425397 is about 20552.9899771298. The cubic root of 422425397 is about 750.3260194464.

The spelling of 422425397 in words is "four hundred twenty-two million, four hundred twenty-five thousand, three hundred ninety-seven".