4140025 has 6 divisors (see below), whose sum is σ = 5133662. Its totient is φ = 3312000.

The previous prime is 4140001. The next prime is 4140029. The reversal of 4140025 is 5200414.

It can be written as a sum of positive squares in 3 ways, for example, as 769129 + 3370896 = 877^2 + 1836^2 .

It is not a de Polignac number, because 4140025 - 2¹¹ = 4137977 is a prime.

It is a Duffinian number.

4140025 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4139990 and 4140008.

It is not an unprimeable number, because it can be changed into a prime (4140029) 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, 82776 + ... + 82825.

Almost surely, 2^4140025 is an apocalyptic number.

It is an amenable number.

4140025 is a deficient number, since it is larger than the sum of its proper divisors (993637).

4140025 is a wasteful number, since it uses less digits than its factorization.

4140025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165611 (or 165606 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 4140025 is about 2034.7051383431. The cubic root of 4140025 is about 160.5712005728.

Adding to 4140025 its reverse (5200414), we get a palindrome (9340439).

The spelling of 4140025 in words is "four million, one hundred forty thousand, twenty-five".