3997725 has 24 divisors (see below), whose sum is σ = 6672192. Its totient is φ = 2112000.

The previous prime is 3997723. The next prime is 3997751. The reversal of 3997725 is 5277993.

It is not a de Polignac number, because 3997725 - 2¹ = 3997723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3997723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11149 + ... + 11501.

It is an arithmetic number, because the mean of its divisors is an integer number (278008).

Almost surely, 2^3997725 is an apocalyptic number.

It is an amenable number.

3997725 is a deficient number, since it is larger than the sum of its proper divisors (2674467).

3997725 is a wasteful number, since it uses less digits than its factorization.

3997725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 512 counting only the distinct ones).

The product of its digits is 119070, while the sum is 42.

The square root of 3997725 is about 1999.4311691079. The cubic root of 3997725 is about 158.7100050113.

The spelling of 3997725 in words is "three million, nine hundred ninety-seven thousand, seven hundred twenty-five".