3947525 has 6 divisors (see below), whose sum is σ = 4894962. Its totient is φ = 3158000.

The previous prime is 3947507. The next prime is 3947533. The reversal of 3947525 is 5257493.

It can be written as a sum of positive squares in 3 ways, for example, as 82369 + 3865156 = 287^2 + 1966^2 .

It is not a de Polignac number, because 3947525 - 2¹⁶ = 3881989 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

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, 78926 + ... + 78975.

It is an arithmetic number, because the mean of its divisors is an integer number (815827).

Almost surely, 2^3947525 is an apocalyptic number.

It is an amenable number.

3947525 is a deficient number, since it is larger than the sum of its proper divisors (947437).

3947525 is a wasteful number, since it uses less digits than its factorization.

3947525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157911 (or 157906 counting only the distinct ones).

The product of its digits is 37800, while the sum is 35.

The square root of 3947525 is about 1986.8379400444. The cubic root of 3947525 is about 158.0428901347.

The spelling of 3947525 in words is "three million, nine hundred forty-seven thousand, five hundred twenty-five".