4025513 has 4 divisors (see below), whose sum is σ = 4029780. Its totient is φ = 4021248.

The previous prime is 4025507. The next prime is 4025521. The reversal of 4025513 is 3155204.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1056784 + 2968729 = 1028^2 + 1723^2 .

It is a cyclic number.

It is not a de Polignac number, because 4025513 - 2⁶ = 4025449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4025543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20 + ... + 2837.

It is an arithmetic number, because the mean of its divisors is an integer number (1007445).

Almost surely, 2^4025513 is an apocalyptic number.

It is an amenable number.

4025513 is a deficient number, since it is larger than the sum of its proper divisors (4267).

4025513 is a wasteful number, since it uses less digits than its factorization.

4025513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4266.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 4025513 is about 2006.3681117881. The cubic root of 4025513 is about 159.0768848788.

The spelling of 4025513 in words is "four million, twenty-five thousand, five hundred thirteen".