42660325 has 12 divisors (see below), whose sum is σ = 53370468. Its totient is φ = 33824000.

The previous prime is 42660323. The next prime is 42660407. The reversal of 42660325 is 52306624.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 16924996 + 25735329 = 4114^2 + 5073^2 .

It is not a de Polignac number, because 42660325 - 2¹ = 42660323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42660293 and 42660302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42660323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4726 + ... + 10375.

It is an arithmetic number, because the mean of its divisors is an integer number (4447539).

Almost surely, 2^42660325 is an apocalyptic number.

It is an amenable number.

42660325 is a deficient number, since it is larger than the sum of its proper divisors (10710143).

42660325 is a wasteful number, since it uses less digits than its factorization.

42660325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15224 (or 15219 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 42660325 is about 6531.4871966498. The cubic root of 42660325 is about 349.4148726739.

Adding to 42660325 its reverse (52306624), we get a palindrome (94966949).

The spelling of 42660325 in words is "forty-two million, six hundred sixty thousand, three hundred twenty-five".