42725 has 6 divisors (see below), whose sum is σ = 53010. Its totient is φ = 34160.

The previous prime is 42719. The next prime is 42727. The reversal of 42725 is 52724.

It can be written as a sum of positive squares in 3 ways, for example, as 289 + 42436 = 17^2 + 206^2 .

It is not a de Polignac number, because 42725 - 2⁴ = 42709 is a prime.

It is a Curzon number.

It is a plaindrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 42697 and 42706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 830 + ... + 879.

It is an arithmetic number, because the mean of its divisors is an integer number (8835).

2⁴²⁷²⁵ is an apocalyptic number.

It is an amenable number.

42725 is a deficient number, since it is larger than the sum of its proper divisors (10285).

42725 is a wasteful number, since it uses less digits than its factorization.

42725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719 (or 1714 counting only the distinct ones).

The product of its digits is 560, while the sum is 20.

The square root of 42725 is about 206.7002660859. The cubic root of 42725 is about 34.9591359815.

Subtracting 42725 from its reverse (52724), we obtain a palindrome (9999).

It can be divided in two parts, 42 and 725, that added together give a palindrome (767).

The spelling of 42725 in words is "forty-two thousand, seven hundred twenty-five".