42330625 has 20 divisors (see below), whose sum is σ = 53560980. Its totient is φ = 33440000.

The previous prime is 42330571. The next prime is 42330677. The reversal of 42330625 is 52603324.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 42289009 + 41616 = 6503^2 + 204^2 .

It is not a de Polignac number, because 42330625 - 2²³ = 33942017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 42330625.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 55245 + ... + 56005.

It is an arithmetic number, because the mean of its divisors is an integer number (2678049).

Almost surely, 2^42330625 is an apocalyptic number.

It is an amenable number.

42330625 is a deficient number, since it is larger than the sum of its proper divisors (11230355).

42330625 is an frugal number, since it uses more digits than its factorization.

42330625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 42330625 is about 6506.1989671390. The cubic root of 42330625 is about 348.5123936620.

Adding to 42330625 its reverse (52603324), we get a palindrome (94933949).

The spelling of 42330625 in words is "forty-two million, three hundred thirty thousand, six hundred twenty-five".