3925520 has 20 divisors (see below), whose sum is σ = 9127020. Its totient is φ = 1570176.

The previous prime is 3925489. The next prime is 3925541. The reversal of 3925520 is 255293.

3925520 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 2 ways, for example, as 495616 + 3429904 = 704^2 + 1852^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a d-powerful number, because it can be written as 3¹² + 9³ + 2¹⁰ + 5⁸ + 5⁹ + 2²⁰ + 0 .

It is a self number, because there is not a number n which added to its sum of digits gives 3925520.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24455 + ... + 24614.

It is an arithmetic number, because the mean of its divisors is an integer number (456351).

Almost surely, 2^3925520 is an apocalyptic number.

It is an amenable number.

3925520 is an abundant number, since it is smaller than the sum of its proper divisors (5201500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3925520 is a wasteful number, since it uses less digits than its factorization.

3925520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49082 (or 49076 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 3925520 is about 1981.2925074304. The cubic root of 3925520 is about 157.7486791246.

The spelling of 3925520 in words is "three million, nine hundred twenty-five thousand, five hundred twenty".