4020515025 has 24 divisors (see below), whose sum is σ = 6695788704. Its totient is φ = 2128617600.

The previous prime is 4020515017. The next prime is 4020515039. The reversal of 4020515025 is 5205150204.

It is a happy number.

4020515025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4020515025 - 2³ = 4020515017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4020514986 and 4020515004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 185371 + ... + 205920.

It is an arithmetic number, because the mean of its divisors is an integer number (278991196).

Almost surely, 2^4020515025 is an apocalyptic number.

It is an amenable number.

4020515025 is a deficient number, since it is larger than the sum of its proper divisors (2675273679).

4020515025 is a wasteful number, since it uses less digits than its factorization.

4020515025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391441 (or 391436 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 4020515025 is about 63407.5312955803. The cubic root of 4020515025 is about 1590.1102233623.

Adding to 4020515025 its reverse (5205150204), we get a palindrome (9225665229).

The spelling of 4020515025 in words is "four billion, twenty million, five hundred fifteen thousand, twenty-five".