3985475525 has 6 divisors (see below), whose sum is σ = 4941989682. Its totient is φ = 3188380400.

The previous prime is 3985475441. The next prime is 3985475531. The reversal of 3985475525 is 5255745893.

It can be written as a sum of positive squares in 3 ways, for example, as 1172446081 + 2813029444 = 34241^2 + 53038^2 .

It is not a de Polignac number, because 3985475525 - 2¹⁰ = 3985474501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79709486 + ... + 79709535.

It is an arithmetic number, because the mean of its divisors is an integer number (823664947).

Almost surely, 2^3985475525 is an apocalyptic number.

It is an amenable number.

3985475525 is a deficient number, since it is larger than the sum of its proper divisors (956514157).

3985475525 is a wasteful number, since it uses less digits than its factorization.

3985475525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159419031 (or 159419026 counting only the distinct ones).

The product of its digits is 7560000, while the sum is 53.

The square root of 3985475525 is about 63130.6227198814. The cubic root of 3985475525 is about 1585.4773744777.

The spelling of 3985475525 in words is "three billion, nine hundred eighty-five million, four hundred seventy-five thousand, five hundred twenty-five".