3987125 has 16 divisors (see below), whose sum is σ = 5031936. Its totient is φ = 3154000.

The previous prime is 3987121. The next prime is 3987149. The reversal of 3987125 is 5217893.

It is not a de Polignac number, because 3987125 - 2² = 3987121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3987121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20780 + ... + 20970.

It is an arithmetic number, because the mean of its divisors is an integer number (314496).

Almost surely, 2^3987125 is an apocalyptic number.

It is an amenable number.

3987125 is a deficient number, since it is larger than the sum of its proper divisors (1044811).

3987125 is a wasteful number, since it uses less digits than its factorization.

3987125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 363 counting only the distinct ones).

The product of its digits is 15120, while the sum is 35.

The square root of 3987125 is about 1996.7786557353. The cubic root of 3987125 is about 158.5696072311.

The spelling of 3987125 in words is "three million, nine hundred eighty-seven thousand, one hundred twenty-five".