4005450525 has 12 divisors (see below), whose sum is σ = 6622344992. Its totient is φ = 2136240240.

The previous prime is 4005450521. The next prime is 4005450539. The reversal of 4005450525 is 5250545004.

It is not a de Polignac number, because 4005450525 - 2² = 4005450521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4005450492 and 4005450501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4005450521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26702929 + ... + 26703078.

Almost surely, 2^4005450525 is an apocalyptic number.

It is an amenable number.

4005450525 is a deficient number, since it is larger than the sum of its proper divisors (2616894467).

4005450525 is a wasteful number, since it uses less digits than its factorization.

4005450525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53406020 (or 53406015 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 4005450525 is about 63288.6287179616. The cubic root of 4005450525 is about 1588.1217388170.

Adding to 4005450525 its reverse (5250545004), we get a palindrome (9255995529).

The spelling of 4005450525 in words is "four billion, five million, four hundred fifty thousand, five hundred twenty-five".