4020404525 has 12 divisors (see below), whose sum is σ = 4993615284. Its totient is φ = 3210960000.

The previous prime is 4020404519. The next prime is 4020404533. The reversal of 4020404525 is 5254040204.

4020404525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 273373156 + 3747031369 = 16534^2 + 61213^2 .

It is not a de Polignac number, because 4020404525 - 2⁶ = 4020404461 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4020404494 and 4020404503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118766 + ... + 148815.

It is an arithmetic number, because the mean of its divisors is an integer number (416134607).

Almost surely, 2^4020404525 is an apocalyptic number.

It is an amenable number.

4020404525 is a deficient number, since it is larger than the sum of its proper divisors (973210759).

4020404525 is a wasteful number, since it uses less digits than its factorization.

4020404525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268192 (or 268187 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 4020404525 is about 63406.6599419966. The cubic root of 4020404525 is about 1590.0956556773.

Adding to 4020404525 its reverse (5254040204), we get a palindrome (9274444729).

The spelling of 4020404525 in words is "four billion, twenty million, four hundred four thousand, five hundred twenty-five".